кисень 7 клас
Quiz
•
Chemistry
•
7th Grade
•
Practice Problem
•
Easy
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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Вкажіть відносну молекулярну масу кисню:
4
8
16
32
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
У повітрі найбільше за об'ємом:
кисню
азоту
вуглекислого газу
аргону
3.
OPEN ENDED QUESTION
1 min • 1 pt
Кількість електронів у елемента Оксиген:
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Answer explanation
8
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Вкажіть правильні твердження пов'язані з фізичними властивостями кисню:
трохи важчий за повітря
кипить при -183 ⁰С
добре розчинний у воді
без запаху
газ блакитного кольору
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Склади формулу сполуки Натрію з Оксигеном
NaO
NaO2
Na2O
Na2O3
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