
Вариант 9
Authored by Александр Егорушкин
Chemistry
2nd - 5th Grade
Used 3+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Число электронных слоев в атоме кальция равно
20
2
6
4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Притяжение валентных электронов к ядру наиболее выражено у атома
P
As
Bi
Sb
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Число электронных пар, участвующих в образовании химических связей в молекуле фтороводорода, равно
1
2
5
4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В соединении Mn2O7 валентность марганца
I
III
V
VII
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Кислотные оксиды - это
P2O5 и SO2
SO3 и N2O
CO и Al2O3
ZnO и CuO
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
В реакции замещения между бромидом алюминия и хлором можно получить
одно сложное вещество
одно простое и одно сложное вещество
два сложных вещества
два простых вещества
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
При растворении одного и того же количества вещества в 1 литре воды наименьшей электропроводностью обладает раствор
сероводорода
сульфида натрия
сульфита натрия
серной кислоты
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