
ОВР реакции 8 класс
Quiz
•
Chemistry
•
1st Grade
•
Practice Problem
•
Medium
Александра Сергеевна undefined
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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Сколько электронов приняла сера в процессе, схема которого S+6 -> S-2
4
2
6
8
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Сколько электронов отдал азот в процессе, схема которого N-3 -> N+1
4
0
2
3
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Сколько электронов приняли атомы хлора в процессе, схема которого Cl20 -> 2Cl-1
1
2
0
4
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Укажите электронные уравнения, в которых атомы водорода или азота выполняют роль восстановителя:
H20 + 2ē = 2H-1
H20 - 2ē = 2H+1
N+4 + 2ē = N+2
2N-3 - 6ē = N20
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Процесс принятия электронов атомами называется
Окисление
Благотворительность
Восстановление
Восстановитель
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Элемент, который понижает свою степень окисления в ходе ОВР называется
Гелий
Восстановитель
Меценат
Окислитель
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Элемент, который повышает свою степень окисления в ходе окислительно-восстановительного процесса - это
Восстановитель
Окислитель
Неон
Сера
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