Oxigen

Quiz
•
Chemistry
•
8th Grade
•
Hard
Delia Nemes
Used 11+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxigenul are simbolul chimic ...
O2
O
O3
On
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O2 reprezinta....
Atomul de oxigen
Ozon
Molecula de oxigen
Formula apei
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Prin electroliza apei se obține...
Sulf
Azot
Hidrogen și oxigen
Carbon și oxigen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Prin descompunerea acestei substanțe se obține o cantitate mare de oxigen.
Clorură de sodiu
Clorură de potasiu
Clorat de potasiu
Acid clorhidric
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Prin reacția oxigenului cu metale, rezultă...
Acizi
Baze
Săruri
Oxizi
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Carbonul, în reacția cu oxigenul dă....
CO
CO2
CO3
CO4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cantitatea de oxigen in aerul atmosferic este...
3%
78%
20-21%
16%
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