
Контрольная работа 9 класс 1 четверть

Quiz
•
Chemistry
•
7th Grade
•
Medium
Оксана Дудеева
Used 4+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Вещество, которое в водном растворе диссоцирует на ионы:
(NH4)2SO4
Ca3(PO4)2
CaCO3
CaSiO3
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Уравнению химической реакции H2SO4 + 2NaOH → Na2SO4 + 2H2O соответствует сокращенное ионное уравнение:
H+ + OH- = H2
NAOH = Na+ + OH-
H2SO4 = H+ + SO42-
HSO4- = H+ + SO42-
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Степень окисления серы в сернистой кислоте:
-2
+6
+4
0
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Друг с другом реагируют попарно взятые оксиды:
CO2 и NO
P2O5 и N2O3
SO3 и MgO
CaO и N2O
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Массовая доля серы в серной кислоте равна:
16,33%
32,65%
39,02%
98%
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Формула нитрита магния:
Mg(NO3)2
Mg(NO2)2
Mg3N2
Mn(NO3)2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Разбавленная серная кислота не взаимодействует:
NaOH
Mg
BaCl2
Hg
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