Cik lielu tilpumu ieņem 4 moli skābekļa?

Kā notiek vielu ķīmiskās pārvērtības?

Quiz
•
Chemistry
•
8th Grade
•
Hard
Laura Martinova
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4 L
5,6 L
22,4 L
89,6 L
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kurš no ķīmisko reakciju vienādojumiem neatbilst vielu masas nezūdamības likumam?
4P + 5O2 → 2P2O5
2Fe + 3Cl2 → 2FeCl3
4Cu + O2 → 4CuO
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kurš ķīmiskās reakcijas vienādojums apraksta ķīmisko reakciju, kā alumīnijs reaģē ar sēru, veidojas alumīnija sulfīds?
4Al + 3O2 → 2Al2O3
2Al + 3Br2 → 2AlBr3
2Al _3Cl2 → 2AlCl3
2Al + 3S → Al2S3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kura viela rodas magnija degšanas rezultātā?
Magnija sulfīds
Ūdens
Magnija oksīds
Skābeklis
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kura no gaisa sastāvdaļām ir nepieciešama vielu degšanas uzturēšanai?
Slāpeklis
Skābeklis
Ogļskābā gāze
Inertās gāzes
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kurš no ķīmisko reakciju vienādojumiem apraksta savienošanās reakciju?
2HgO → 2Hg + O2
2H2O → 2H2 + O2
C + O2 → CO2
2Mg + CO2 → 2MgO + C
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kura rīcība būs pareiza, ja virtuvē uz pannas aizdegsies eļļa?
Uzlej ūdeni
Uzliek pannai vāku
Dzēš ar ugunsdzēšamo aparātu
Zvana 112
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