
Тест 7 клас
Authored by Кочеткова Тамара Вікторівна undefined
Chemistry
7th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 2 pts
Вкажіть хімічний символ Оксигену.
О2
О
Н2
Р
2.
MULTIPLE CHOICE QUESTION
10 sec • 2 pts
Вкажіть молекулярну масу кисню
16
8
32
48
3.
MULTIPLE CHOICE QUESTION
10 sec • 2 pts
Виберіть лабораторний спосіб одержання кисню
Розклад гідроген пероксиду
Розклад калій перманганату
Розклад калій хлорату
Усі відповіді правильні
4.
MULTIPLE CHOICE QUESTION
10 sec • 3 pts
Оберіть прізвище вченого, якого вважають першовідкривачем кисню
Дж. Дальтон
Г. Кавендіш
Дж. Пристлі
А. Лавуазьє
5.
MULTIPLE CHOICE QUESTION
10 sec • 3 pts
Вкажіть букву під якою наведено формули оксидів
H2O, Li2O, NaOH
Li2O, LiCl, Cl2O7
CO2, CO, CuO
NH3, CO, K2O
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