
Кислород, его свойства

Quiz
•
Chemistry
•
5th - 6th Grade
•
Hard
Ольга Тинюкова
Used 4+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
С помощью какой реакции можно получить кислород в лаборатории
2H2O = 2H20+ O2
из воздуха
2KCIO3 = 2KCI + 3O2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какая из реакций записана верно
C+O=CO
C2+O2=CO2
C+O2=CO2
C+O3=CO2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Кто первым получил кислород
К. Шееле
Д. Пристли
Э. Резерфорд
М. Ломоносов
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
При сгорании веществ в кислороде образуются...
кислоты
соли
оксиды
основания
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Чему равна масса 2 моль кислорода
16
64
32
128
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Какие формулы записаны правильно
С2O
P2O5
Na2O
MgO2
SO4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какая реакция имеет верную запись
K+O2=K2O
2K2+O2=K2O2
4K+O2=2K20
2K2+ O2=4K2O
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что относится к жидкому топливу
торф
метан
нефть
уголь
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