Химия. Кисень
Authored by Леді Креатив
Chemistry
7th Grade
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Кисень має формулу
О
О2
О3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Оксиген мас відносну атомну масу
15
16
16,5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Валентність Оксигену
І
ІІ
ІІІ
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Для людини Кисень
токсичний у великих концентраціях
корисний у великих концентраціях
не потрібний
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
У повітрі Кисню
20%
21%
22%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Порядковий номер Оксигену
6
7
8
9
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Скільки простих речовин утворює Оксиген?
2
3
4
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