
Hemijske jednačine
Authored by Danijela Gligorić
Chemistry
7th Grade
Used 18+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Odaberi formulu koja prikazuje molekul vodonika.
H2
O2
H2O
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Odaberi formulu koja prikazuje molekul kiseonika:
H2O
H2
O2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Odaberi formulu koja prikazuje molekul vode.
H2O
O2
H2
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Ako znamo da hemijskim promenama nastaju nove supstance koja od ponuđenih promena je hemijska promena?
nastajanje vode reakcijom između vodonika i kiseonika
prosipanje vode iz flaše
točenje vode u flašu
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kojom od sledećih hemijskih jednačina je prikazano nastajanje vode?
2H2 +O2 →2H2O
3H2 +N2 →2NH3
C + O2 →CO2
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2H2 +O2 →2H2O
Jednačina iznad pokazuje nastajanje vode. Ako znamo da su reaktanti polazne supstance u hemijskoj reakciji , to znači da su kod nastajanja vode reaktanti:
H2 i O2
H2
O2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2H2 +O2 →2H2O
Jednačina iznad pokazuje nastajanje vode. Ako znamo da su proizvodi supstance koje nastaju u hemijskoj reakciji , to znači da je kod nastajanja vode proizvod:
H2
O2
H2O
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