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Vesinik ja hapnik

Authored by Katrin Soika

Chemistry

8th Grade

Used 8+ times

Vesinik ja hapnik
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26 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Millist ainet on vaja põlemiseks?

vesinikku

lämmastikku

hapnikku

süsihappegaasi

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kui palju on õhus hapnikku?

78%

32%

18%

21%

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Millise aine kuumutamisel oleks võimalik saada laboris hapnikku?

KClO3

H2S

KCl

H2O

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mis ainet on vaja põlemiseks?

lämmastikku
hapnikku
süsihappegaasi
osooni

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kui palju on õhus lämmastikku?

78%

32%

18%

21%

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kas vesinik on õhust raskem või kergem?

kergem

raskem

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kas hapnik on õhust raskem või kergem?

kergem

raskem

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