
Сера 9 класс
Authored by Сергеевна undefined
Chemistry
9th Grade
Used 1+ times

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20 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Укажите возможные степени окисления серы
-1
-2
+4
+2
+6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сера является окислителем в реакции:
2H2S + 3О2 = 2SО2 + 2H2О
3S + 2Al = Al2S3
2SO2 + O2 = 2SO3
S + 3NO2 = SO3 + 3NO
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Химическая связь в молекулах серы S8
ковалентная полярная
ковалентная неполярная
ионная
металлическая
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Верны ли следующие утверждения?
А. По сравнению с атомами кислорода атомы серы имеют больший радиус
Б. По сравнению с атомами кислорода атомы серы более электроотрицательные
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите число валентных электронов в основном состоянии атома серы
6
2
4
1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Степень окисления, равную +4, сера имеет в соединении
SO2
Fe2(SO4)3
(NH4)2S
SF6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Значения высшей и низшей степени окисления серы соответственно равны:
+2 и -6
+6 и -2
+6 и -3
+5 и -2
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