9 Химия 1 вариант (рус)
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Болат Еспенбетов
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Атом состоит из:
A) протонов и нейтронов
B) ядра и вращающихся вокруг него нейтронов
C) протонов и электронов
D) ядра и вращающихся вокруг него электронов
E) нейтронов и электронов
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
К реакциям соединения относится:
A) 2Cu + O2 ---> 2CuO
B) Cu(OH)2 + 2HCl ---> CuCl2 + 2H2O
C) CuCO3 ---> CuO + CO2
D) CuO + H2SO4 ---> CuSO4 + H2O
E) CuSO4 + 2NaOH ---> Cu(OH)2 + Na2SO4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Число электронов в атоме хрома
A) 52
B) 25
C) 24
D) 31
E) 34
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Реакция, идущая с увеличением объема
A) 2H2 + O2 = 2H2O
B) H2 + Cl2 = 2HCl (возрастает)
C) H2 + CuO = Cu + H2O
D) 2KClO3 = 2KCl + 3O2 (возрастает)
E) N2 + 3H2 = 2NH3 (возрастает)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Электронная конфигурация А1
A) …3s2
B) …3s2 3p6
C) …3 s23р1
D) …3s23р4
E) …4s2 4p1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Относительная молекулярная масса 95 будет у вещества
A) Al2O3
B) H2O2
C) BaO
D) H2O
E) MgС12
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В схеме превращений CuO --1--> CuCl2 --2--> Cu(OH)2 --3--> CuSO4 --4--> Cu3(PO4)2 с образованием осадка идет реакция
A) 1, 3
B) 2, 4
C) 3
D) 1
E) 2, 3
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