
Тест по химии для 9 класса (срез)
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Умирбек Умирзаков
Used 2+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Серия элементов, общая формула высших оксидов R2O
Na, K, Li
N, P, As
Mg, Cu, Be
B, Al, Ca
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
У какого атома преобладают неметаллические свойства
О
N
B
F
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Реакция веществ с кислородом
нейтрализация
обмен
окисление
замещение
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Масса растворенного вещества в 250 г 20% раствора:
150 г
50 г
250 г
80 г
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Степень окисления серы в оксиде SO3
+2
-2
+4
+6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Число протонов в ядре атома железа
20
55
30
26
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Массовое соотношение атомов элементов в молекуле MgCO3
2:1:2
2:1:4
3:1:3
6:3:12
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