Химические реакции. 8 кл
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
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32 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
В каких случаях протекает химическая реакция?
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Коэффициент перед формулой азота: H2 + N2 = NH3
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Сумма коэффициентов перед исходными веществами: Al + O2 = Al2O3.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Выберите вещества соответственно необходимые для осуществления превращений по схеме: Na → NaOH → NaCl
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какой тип реакции протекает по схеме: H2SO4 → H2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выберите схему реакции замещения:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой тип реакции протекает между кислородом и углеродом
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