Aatomid ja ained

Aatomid ja ained

7th Grade

17 Qs

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Aatomid ja ained

Aatomid ja ained

Assessment

Quiz

Science

7th Grade

Practice Problem

Hard

Created by

Tiiu Rohtla

Used 8+ times

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17 questions

Show all answers

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

Media Image

Filtriga saab eraldada vedelikust

bakterid

lahustunud soolad

hõljuvad taimeosakesed

vee

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

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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