
Халькогены и галогены
Authored by Полина Новикова
Chemistry
11th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Для атома хлора в соединениях НЕВОЗМОЖНЫ степени окисления:
-1
-2
+7
+8
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Фтор входит в состав:
сильвинита
флюорита
криолита
карналлита
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
В отличии от других галогенов фтор реагирует с:
водородом
водой
оксидом кремния
цинком
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Укажите верные утверждения для элементов 5А группы:
высшая валентность атомов всех элементов равна 6
все элементы являются неметаллами с ростом
атомного номера металлические свойства
усиливаются низшая степень окисления атомов равна -2
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Кислород может окислить вещества, формулы которых:
N2 и F2
S и Ar
C и Si
H2 и Cu
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Атомы кислорода являются и окислителями, и восстановителями в процессах, схемы которых:
K2O+CO2=K2CO3
K2O2+CO2=K2CO3+O2
KO2+CO2=K2CO3+O2
H2O2+KMnO4+H2SO4=O2+MnSO4+K2SO4+H2O
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Кислотные свойства оксид серы SO2 проявляет, взаимодействуя с:
CaO
H2S
O2
Ba(OH)2
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