Oxigen

Oxigen

8th Grade

13 Qs

quiz-placeholder

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Oxigen

Oxigen

Assessment

Quiz

Chemistry

8th Grade

Practice Problem

Hard

Created by

Delia Nemes

Used 11+ times

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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

Media Image

O2 reprezinta....

Atomul de oxigen

Ozon

Molecula de oxigen

Formula apei

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Prin electroliza apei se obține...

Sulf

Azot

Hidrogen și oxigen

Carbon și oxigen

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

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

Media Image

Prin reacția oxigenului cu metale, rezultă...

Acizi

Baze

Săruri

Oxizi

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Media Image

Carbonul, în reacția cu oxigenul dă....

CO

CO2

CO3

CO4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Cantitatea de oxigen in aerul atmosferic este...

3%

78%

20-21%

16%

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