9 класс, повторение 8
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Мария Шачонок
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Укажите формулы оксидов
H2O2
K2O
NaOH
H3PO4
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Чему равна валентность кремния в основной части кварца SiO2
4
2
1
3
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Свойство атомов одного химического элемента соединяться со строго определенным числом атомов другого химического элемента называется:
валентность
степень окисления
изомерия
амфотерность
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Укажите формулу БЕСКИСЛОРОДНОЙ , ДВУОСНОВНОЙ кислоты
HCL
H2SO4
H2S
NaBr
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Что получится в результате реакции
Кислота + основание = .... + ....
соль+ водород
соль+вода
новая кислота + вода
новое основание + вода
6.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Из списка выберите кислотные оксиды
СО2
Na2O
P2O5
Al2O3
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Атомный номер элемента равен - 9 (фтор). Укажите заряд ядра атома, число протонов в ядре и число электронов в атоме.
9, 9, 9
9,19,9
9,9,19
7,9,9
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