
Aatomid ja ained
Authored by Tiiu Rohtla
Science
7th Grade
Used 8+ times

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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hapniku tähis
H
N
O
C
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vee puhastamine raskusjõu abil (toimub tahkete veest suurema tihedusega osakeste põhja vajumine).
Filtrimine
destilleerimine
aurustamine
setitamine
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Filtriga saab eraldada vedelikust
bakterid
lahustunud soolad
hõljuvad taimeosakesed
vee
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pildil on
süsihappegaasi molekul
vesiniku molekul
hapnikvesiniku molekul
vee molekul
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mereveest saame magevee
destilleerimisel
aurustamisel
filtrimisel
sõela abil
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Süsihappegaas tekib põlemisel, hingamisel, kõdunemisel. Süsihappegaasi valem on
HO2
CO2
NO2
CO
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CO2 molekul koosneb
ühest lämmastiku ja kahest hapniku aatomist
ühest süsiniku ja kahest hapniku aatomist
ühest söe ja kahest hapniku aatomist
ühest kloori jakahest hapniku aatomist
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