Номер 1, страница 7 - гдз по химии 10 класс учебник Еремин, Кузьменко

Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета

Авторы: Еремин В. В., Кузьменко Н. Е., Теренин В. И., Дроздов А. А., Лунин В. В.

Тип: Учебник

Издательство: Просвещение

Год издания: 2023 - 2026

Уровень обучения: углублённый

Цвет обложки: белый, зелёный с радугой

Допущено Министерством просвещения Российской Федерации

Глава 1. Повторение и углубление знаний. Параграф 1. Атомы, молекулы, вещества - номер 1, страница 7.

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                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 5153
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
                          ]
                          #original: array:6 [
                            "id" => 5153
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1110
                      #items: array:5 [
                        0 => App\Models\Term {#1111
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 4330
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Еремин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Вадим"
                            "field_patronymic" => "Владимирович"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4330
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Еремин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Вадим"
                            "field_patronymic" => "Владимирович"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        1 => App\Models\Term {#1112
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 4876
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Кузьменко"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Николай"
                            "field_patronymic" => "Егорович"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4876
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Кузьменко"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Николай"
                            "field_patronymic" => "Егорович"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        2 => App\Models\Term {#1113
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 5912
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Теренин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Владимир"
                            "field_patronymic" => "Ильич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 5912
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Теренин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Владимир"
                            "field_patronymic" => "Ильич"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        3 => App\Models\Term {#1114
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 4290
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Дроздов"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Андрей"
                            "field_patronymic" => "Анатольевич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4290
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Дроздов"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Андрей"
                            "field_patronymic" => "Анатольевич"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        4 => App\Models\Term {#1115
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 5031
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Лунин"
                            "field_bio" => null
                            "field_degree_rp" => "доктор химических наук, академика РАН"
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Валерий"
                            "field_patronymic" => "Васильевич"
                            "field_surname_rp" => "Лунина"
                          ]
                          #original: array:12 [
                            "id" => 5031
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Лунин"
                            "field_bio" => null
                            "field_degree_rp" => "доктор химических наук, академика РАН"
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Валерий"
                            "field_patronymic" => "Васильевич"
                            "field_surname_rp" => "Лунина"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1116
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1117
                      #items: array:1 [
                        0 => App\Models\Term {#1118
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:10 [
                            "id" => 6671
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [ …6]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #original: array:10 [
                            "id" => 6671
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [ …6]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1119
                      #items: array:1 [
                        0 => App\Models\Term {#1120
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 9
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Россия"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "rossiya"
                          ]
                          #original: array:6 [
                            "id" => 9
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Россия"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "rossiya"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1121
                      #items: array:1 [
                        0 => App\Models\Term {#1122
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "moskva"
                          ]
                          #original: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "moskva"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1123
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1124
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1125
                      #items: array:1 [
                        0 => App\Models\Term {#1126
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 39
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "углублённый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "uglublennyy"
                          ]
                          #original: array:6 [
                            "id" => 39
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "углублённый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "uglublennyy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1127
                      #items: array:1 [
                        0 => App\Models\Term {#1128
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "field_cases" => array:6 [ …6]
                            "field_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #original: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "field_cases" => array:6 [ …6]
                            "field_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_publication_number" => "10"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1129
                      #items: array:1 [
                        0 => App\Models\Term {#1130
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 33
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "стереотипное"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "stereotipnoe"
                          ]
                          #original: array:6 [
                            "id" => 33
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "стереотипное"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "stereotipnoe"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1131
                      #items: array:1 [
                        0 => App\Models\Term {#1115}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition_degree" => "доктор химических наук, академика РАН"
                    "field_cover_description" => "с радугой"
                    "field_publication_year" => "2023"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => null
                    "field_allowed" => "Допущено Министерством просвещения Российской Федерации"
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "697"
                    "field_priority" => "10"
                    "field_default_folder" => "/himiya_10/eremin-u23/"
                    "field_isbn" => null
                    "field_cover" => array:1 [
                      0 => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                        "alt" => ""
                        "width" => "1200"
                        "height" => "1576"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1132
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1133
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1134
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_url" => "/10-klass/himiya/eremin-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1135
                      #items: array:2 [
                        0 => App\Models\Term {#1136
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 45
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "белый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "belyy"
                          ]
                          #original: array:6 [
                            "id" => 45
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "белый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "belyy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        1 => App\Models\Term {#1137
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 47
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "зелёный"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "zelyonyy"
                          ]
                          #original: array:6 [
                            "id" => 47
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "зелёный"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "zelyonyy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 381
                      "subject" => 558
                      "class_subject" => 500
                    ]
                  ]
                  #original: array:50 [
                    "id" => 1003
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_tree_default_status" => "tasks"
                    "field_pages_status" => null
                    "field_subject" => Illuminate\Database\Eloquent\Collection {#1105}
                    "field_class" => Illuminate\Database\Eloquent\Collection {#1106}
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1108}
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1110}
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1116}
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1117}
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1119}
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1121}
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1123}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1124}
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1125}
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1127}
                    "field_publication_number" => "10"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1129}
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1131}
                    "field_under_the_edition_degree" => "доктор химических наук, академика РАН"
                    "field_cover_description" => "с радугой"
                    "field_publication_year" => "2023"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => null
                    "field_allowed" => "Допущено Министерством просвещения Российской Федерации"
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "697"
                    "field_priority" => "10"
                    "field_default_folder" => "/himiya_10/eremin-u23/"
                    "field_isbn" => null
                    "field_cover" => array:1 [
                      0 => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                        "alt" => ""
                        "width" => "1200"
                        "height" => "1576"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1132}
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1133}
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1134}
                    "field_url" => "/10-klass/himiya/eremin-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1135}
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 381
                      "subject" => 558
                      "class_subject" => 500
                    ]
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1138
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:23 [
            "id" => 662698
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_display_title" => "Повторение и углубление знаний"
            "field_branch_order" => "1"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1104}
            "field_page_start" => "5"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1140}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1138}
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1139
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:23 [
            "id" => 662699
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_display_title" => "Атомы, молекулы, вещества"
            "field_branch_order" => "1"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1144
              #items: array:1 [
                0 => App\Models\Term {#1141
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #original: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "5"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1143
              #items: array:1 [
                0 => App\Models\Book {#1103}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1142
              #items: array:1 [
                0 => App\Models\Branch {#1006}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:23 [
            "id" => 662699
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_display_title" => "Атомы, молекулы, вещества"
            "field_branch_order" => "1"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1144}
            "field_page_start" => "5"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1143}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1142}
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          +timestamps: true
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1089
      #items: array:3 [
        0 => App\Models\Element {#1082
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          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          #perPage: 15
          +exists: true
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          #escapeWhenCastingToString: false
          #attributes: array:7 [
            "id" => 818193
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1074
              #items: array:1 [
                0 => App\Models\Edition {#1066
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 1829
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1081 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1078 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1079 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1076 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 1829
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Условие"
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1081 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1078 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1079 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1076 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "662778"
              "type" => "task"
            ]
            "text" => "<p><strong>1.</strong> Приведите примеры веществ молекулярного и немолекулярного строения. Что выражает в каждом случае химическая формула?</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "1-1.jpg"
                "alt" => null
                "width" => "856"
                "height" => 146
                "path" => "/media/himiya_10/eremin-u23/0-01/1-1.webp?ts=1738779424"
              ]
            ]
          ]
          #original: array:7 [
            "id" => 818193
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1074}
            "task" => array:2 [
              "refs" => "662778"
              "type" => "task"
            ]
            "text" => "<p><strong>1.</strong> Приведите примеры веществ молекулярного и немолекулярного строения. Что выражает в каждом случае химическая формула?</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "1-1.jpg"
                "alt" => null
                "width" => "856"
                "height" => 146
                "path" => "/media/himiya_10/eremin-u23/0-01/1-1.webp?ts=1738779424"
              ]
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Element {#1077
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 818253
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1061
              #items: array:1 [
                0 => App\Models\Edition {#1075
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 1830
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Решение"
                    "field_order" => "2"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1073 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "image"
                    "field_page_content_mode" => ""
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Ладыко (Торчило)"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "1-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1070 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1071 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1068 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 1830
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Решение"
                    "field_order" => "2"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1073 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "image"
                    "field_page_content_mode" => ""
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Ладыко (Торчило)"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "1-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1070 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1071 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1068 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
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                  #dateFormat: null
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            "text" => "<p>Вещества по своему строению делятся на две большие группы: молекулярного и немолекулярного строения. Это различие определяет их физические свойства и то, какой смысл несет их химическая формула.</p><p><strong>Вещества молекулярного строения</strong></p><p>Такие вещества состоят из отдельных молекул. В узлах их кристаллических решеток (в твердом состоянии) находятся молекулы, связанные слабыми межмолекулярными силами. Поэтому вещества молекулярного строения обычно являются газами, жидкостями или легкоплавкими твердыми веществами при нормальных условиях.</p><p><em>Примеры:</em></p><ul><li>Вода ($H_2O$)</li><li>Углекислый газ ($CO_2$)</li><li>Кислород ($O_2$)</li><li>Метан ($CH_4$)</li><li>Йод ($I_2$)</li><li>Сахароза ($C_{12}H_{22}O_{11}$)</li></ul><p>Для веществ молекулярного строения химическая формула (молекулярная формула) выражает <strong>реальный качественный и количественный состав одной молекулы</strong>. Она показывает, атомы каких химических элементов и в каком количестве входят в состав одной молекулы данного вещества.</p><p>Например, формула воды $H_2O$ показывает, что одна молекула воды состоит из двух атомов водорода ($H$) и одного атома кислорода ($O$). Формула сахарозы $C_{12}H_{22}O_{11}$ показывает, что ее молекула состоит из 12 атомов углерода, 22 атомов водорода и 11 атомов кислорода.</p><p><strong>Ответ:</strong> Примерами веществ молекулярного строения являются вода ($H_2O$), углекислый газ ($CO_2$), метан ($CH_4$). Их химическая формула показывает точный атомный состав одной молекулы вещества.</p><p><strong>Вещества немолекулярного строения</strong></p><p>Эти вещества не содержат отдельных молекул. Они представляют собой гигантские структуры (кристаллические решетки), в которых все атомы или ионы прочно связаны между собой химическими связями (ковалентными, ионными или металлическими). Такие вещества, как правило, твердые, тугоплавкие и нелетучие.</p><p><em>Примеры в зависимости от типа кристаллической решетки:</em></p><ul><li><strong>Атомная решетка</strong> (атомы связаны ковалентными связями): алмаз и графит ($C$), диоксид кремния (кварц, песок) ($SiO_2$), карбид кремния ($SiC$).</li><li><strong>Ионная решетка</strong> (состоит из катионов и анионов): хлорид натрия (поваренная соль) ($NaCl$), сульфат меди(II) ($CuSO_4$), карбонат кальция ($CaCO_3$).</li><li><strong>Металлическая решетка</strong> (состоит из катионов металлов и "электронного газа"): железо ($Fe$), медь ($Cu$), алюминий ($Al$) и другие металлы и их сплавы.</li></ul><p>Для веществ немолекулярного строения химическая формула является <strong>простейшей (эмпирической) формулой</strong> и называется <strong>формульной единицей</strong>. Она выражает <strong>простейшее целочисленное соотношение</strong> числа атомов или ионов разных элементов в кристалле.</p><p>Например, формула $SiO_2$ не означает, что существует отдельная молекула $SiO_2$. Она показывает, что в кристалле кварца на каждый атом кремния ($Si$) приходится два атома кислорода ($O$). Формула поваренной соли $NaCl$ показывает, что в ее кристалле число ионов натрия ($Na^+$) равно числу ионов хлора ($Cl^-$), и их соотношение составляет 1:1.</p><p><strong>Ответ:</strong> Примерами веществ немолекулярного строения являются алмаз ($C$), диоксид кремния ($SiO_2$), хлорид натрия ($NaCl$), железо ($Fe$). Их химическая формула (формульная единица) выражает простейшее соотношение атомов или ионов в кристаллической решетке.</p>"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1058}
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            "text" => "<p>Вещества по своему строению делятся на две большие группы: молекулярного и немолекулярного строения. Это различие определяет их физические свойства и то, какой смысл несет их химическая формула.</p><p><strong>Вещества молекулярного строения</strong></p><p>Такие вещества состоят из отдельных молекул. В узлах их кристаллических решеток (в твердом состоянии) находятся молекулы, связанные слабыми межмолекулярными силами. Поэтому вещества молекулярного строения обычно являются газами, жидкостями или легкоплавкими твердыми веществами при нормальных условиях.</p><p><em>Примеры:</em></p><ul><li>Вода ($H_2O$)</li><li>Углекислый газ ($CO_2$)</li><li>Кислород ($O_2$)</li><li>Метан ($CH_4$)</li><li>Йод ($I_2$)</li><li>Сахароза ($C_{12}H_{22}O_{11}$)</li></ul><p>Для веществ молекулярного строения химическая формула (молекулярная формула) выражает <strong>реальный качественный и количественный состав одной молекулы</strong>. Она показывает, атомы каких химических элементов и в каком количестве входят в состав одной молекулы данного вещества.</p><p>Например, формула воды $H_2O$ показывает, что одна молекула воды состоит из двух атомов водорода ($H$) и одного атома кислорода ($O$). Формула сахарозы $C_{12}H_{22}O_{11}$ показывает, что ее молекула состоит из 12 атомов углерода, 22 атомов водорода и 11 атомов кислорода.</p><p><strong>Ответ:</strong> Примерами веществ молекулярного строения являются вода ($H_2O$), углекислый газ ($CO_2$), метан ($CH_4$). Их химическая формула показывает точный атомный состав одной молекулы вещества.</p><p><strong>Вещества немолекулярного строения</strong></p><p>Эти вещества не содержат отдельных молекул. Они представляют собой гигантские структуры (кристаллические решетки), в которых все атомы или ионы прочно связаны между собой химическими связями (ковалентными, ионными или металлическими). Такие вещества, как правило, твердые, тугоплавкие и нелетучие.</p><p><em>Примеры в зависимости от типа кристаллической решетки:</em></p><ul><li><strong>Атомная решетка</strong> (атомы связаны ковалентными связями): алмаз и графит ($C$), диоксид кремния (кварц, песок) ($SiO_2$), карбид кремния ($SiC$).</li><li><strong>Ионная решетка</strong> (состоит из катионов и анионов): хлорид натрия (поваренная соль) ($NaCl$), сульфат меди(II) ($CuSO_4$), карбонат кальция ($CaCO_3$).</li><li><strong>Металлическая решетка</strong> (состоит из катионов металлов и "электронного газа"): железо ($Fe$), медь ($Cu$), алюминий ($Al$) и другие металлы и их сплавы.</li></ul><p>Для веществ немолекулярного строения химическая формула является <strong>простейшей (эмпирической) формулой</strong> и называется <strong>формульной единицей</strong>. Она выражает <strong>простейшее целочисленное соотношение</strong> числа атомов или ионов разных элементов в кристалле.</p><p>Например, формула $SiO_2$ не означает, что существует отдельная молекула $SiO_2$. Она показывает, что в кристалле кварца на каждый атом кремния ($Si$) приходится два атома кислорода ($O$). Формула поваренной соли $NaCl$ показывает, что в ее кристалле число ионов натрия ($Na^+$) равно числу ионов хлора ($Cl^-$), и их соотношение составляет 1:1.</p><p><strong>Ответ:</strong> Примерами веществ немолекулярного строения являются алмаз ($C$), диоксид кремния ($SiO_2$), хлорид натрия ($NaCl$), железо ($Fe$). Их химическая формула (формульная единица) выражает простейшее соотношение атомов или ионов в кристаллической решетке.</p>"
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№1 (с. 7)
Условие. №1 (с. 7)
скриншот условия
Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета, страница 7, номер 1, Условие

1. Приведите примеры веществ молекулярного и немолекулярного строения. Что выражает в каждом случае химическая формула?

Решение. №1 (с. 7)
Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета, страница 7, номер 1, Решение
Решение 2. №1 (с. 7)

Вещества по своему строению делятся на две большие группы: молекулярного и немолекулярного строения. Это различие определяет их физические свойства и то, какой смысл несет их химическая формула.

Вещества молекулярного строения

Такие вещества состоят из отдельных молекул. В узлах их кристаллических решеток (в твердом состоянии) находятся молекулы, связанные слабыми межмолекулярными силами. Поэтому вещества молекулярного строения обычно являются газами, жидкостями или легкоплавкими твердыми веществами при нормальных условиях.

Примеры:

  • Вода ($H_2O$)
  • Углекислый газ ($CO_2$)
  • Кислород ($O_2$)
  • Метан ($CH_4$)
  • Йод ($I_2$)
  • Сахароза ($C_{12}H_{22}O_{11}$)

Для веществ молекулярного строения химическая формула (молекулярная формула) выражает реальный качественный и количественный состав одной молекулы. Она показывает, атомы каких химических элементов и в каком количестве входят в состав одной молекулы данного вещества.

Например, формула воды $H_2O$ показывает, что одна молекула воды состоит из двух атомов водорода ($H$) и одного атома кислорода ($O$). Формула сахарозы $C_{12}H_{22}O_{11}$ показывает, что ее молекула состоит из 12 атомов углерода, 22 атомов водорода и 11 атомов кислорода.

Ответ: Примерами веществ молекулярного строения являются вода ($H_2O$), углекислый газ ($CO_2$), метан ($CH_4$). Их химическая формула показывает точный атомный состав одной молекулы вещества.

Вещества немолекулярного строения

Эти вещества не содержат отдельных молекул. Они представляют собой гигантские структуры (кристаллические решетки), в которых все атомы или ионы прочно связаны между собой химическими связями (ковалентными, ионными или металлическими). Такие вещества, как правило, твердые, тугоплавкие и нелетучие.

Примеры в зависимости от типа кристаллической решетки:

  • Атомная решетка (атомы связаны ковалентными связями): алмаз и графит ($C$), диоксид кремния (кварц, песок) ($SiO_2$), карбид кремния ($SiC$).
  • Ионная решетка (состоит из катионов и анионов): хлорид натрия (поваренная соль) ($NaCl$), сульфат меди(II) ($CuSO_4$), карбонат кальция ($CaCO_3$).
  • Металлическая решетка (состоит из катионов металлов и "электронного газа"): железо ($Fe$), медь ($Cu$), алюминий ($Al$) и другие металлы и их сплавы.

Для веществ немолекулярного строения химическая формула является простейшей (эмпирической) формулой и называется формульной единицей. Она выражает простейшее целочисленное соотношение числа атомов или ионов разных элементов в кристалле.

Например, формула $SiO_2$ не означает, что существует отдельная молекула $SiO_2$. Она показывает, что в кристалле кварца на каждый атом кремния ($Si$) приходится два атома кислорода ($O$). Формула поваренной соли $NaCl$ показывает, что в ее кристалле число ионов натрия ($Na^+$) равно числу ионов хлора ($Cl^-$), и их соотношение составляет 1:1.

Ответ: Примерами веществ немолекулярного строения являются алмаз ($C$), диоксид кремния ($SiO_2$), хлорид натрия ($NaCl$), железо ($Fe$). Их химическая формула (формульная единица) выражает простейшее соотношение атомов или ионов в кристаллической решетке.

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