Hapnik
Authored by Egle Lellep
Chemistry
8th Grade
12 Questions
Used 21+ times
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kui palju hapniku on õhus?
21%
78%
0,04%
0,9%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mis on osooni valem?
O2
O3
O
O4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hapnik on elusorganismidele vajalik....
fotosünteesiks
hingamiseks
põlemiseks
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Hapniku toodavad....
taimed
loomad
seened
samblikud
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Hapnikku saab laboris toota......
hapnikku sisaldavate ainete lagundamisel
vee elektrolüüsil
õhust
metallidest
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hapnik on õhust ....
kergem
raskem
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Hapnikku saab koguda....
läbi vee kuna ta ei lahustu vees
katseklaasi ava ülespoole kuna hapnik on õhust raskem
katseklaasi ava allapoole kuna hapnik on õhust kergem
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