
кислород и сера
Authored by Tatsiana Dubrovka
Chemistry
11th Grade
Used 18+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Сколько валентных электронов у кислорода и серы?
2
4
6
8
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Для кислорода характерны степени окисления
-2;0;+2
-2;0;+6
-2;0;+4;+6
-2;0
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Для серы характерны степени окисления
-2;0;+2
-2;0;+6
-2;0;+4;+6
-2;0
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Оксидом не является вещество
FeO
Fe2O3
Fe3O4
KO2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Кислород и озон - это
элементы
изотопы
изомеры
аллотропные модификации
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Кислород в реакциях с металлами проявляет свойства
окислителя
восстановителя
и окислителя и восстановителя
кислотные
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Выберите неверное утверждение
при взаимодействии серы с кислородом образуется оксид серы (VI)
молекула кристаллической серы состоит их 8 атомов
озон - газ с резким запахом, токсичен для живых оганизмов
в воздухе содержится около 21% кислорода по объему
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