
Chemické rovnice
Quiz
•
Chemistry
•
8th - 9th Grade
•
Hard
Jitka Gedosova
Used 11+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jak nazýváme látky, které vstupují do reakce (vlevo před šipkou)?
reaktanty
produkty
polutanty
oktanty
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jak nazýváme látky, které z reakce vystupují (na pravé straně za šipkou)?
reaktanty
produkty
polutanty
oktanty
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co určuje směr chemické reakce?
stechiometrický koeficient
plus
lomítko
šipka
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Která rovnice je správně upravená ve smyslu zákona zachování hmoty a energie?
2 H2 + 2 F2 → 2 HF
H2 + 2 F2 → HF
2 H2 + F2 → HF
H2 + F2 → 2 HF
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Která rovnice je správně upravená ve smyslu zákona zachování hmoty a energie?
Ca + O2 → CaO
Ca + O2 → 2 CaO
2 Ca + O2 → 2 CaO
2 Ca + 2 O2 → 2 CaO
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Která rovnice je správně upravená ve smyslu zákona zachování hmoty a energie?
2 HgO → 2 Hg + O2
2 HgO → Hg + O2
HgO → 2 Hg + O2
HgO → Hg + 2 O2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Která rovnice je správně upravená ve smyslu zákona zachování hmoty a energie?
C + O2 → CO2
2 C + O2 → CO2
2 C + O2 → 2 CO2
2 C + 2 O2 → CO2
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