Кислород-это
Кислород

Quiz
•
Chemistry
•
11th Grade
•
Hard
Проект 32
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
жидкость
газ
твердое в-во
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Постоянная степень окисления кислорода равна:
-2
+1
+3
-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
С чем из предложенных веществ не реагирует кислород?
С металлами
с неметаллами
с галогенами
с водородом
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Кислород является-
сильным окислителем
слабым окислителем
сильным восстановителем
слабым восстановителем
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
При получении кислорода методом вытеснения воздуха, приёмную пробирку нужно держать
Горизанатльно
отверстием вверх
отверстием вниз
Без разницы
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
К реакциям горения относится реакция
СаСO3 = CaO + CO2
2HgO=2Hg + O2
2Mg + O2 = 2MgO
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