
Chemické reakce
Authored by Svatava Sumbalová
Chemistry
9th - 12th Grade
Used 9+ times

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12 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Který z dějů je chemickou reakcí?
dýchání
rozpouštění cukru ve vodě
sublimace jodu
termonukleární fúze
koroze železa
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
V reakci 2 Na + 2 H2O → H2 +2 NaOH
je voda
reaktantem
produktem
výchozí látkou
rozpouštědlem
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
V chemické reakci na obrázku je kyslík
reaktantem
produktem
katalyzátorem
výchozí látkou
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Rozkladem peroxidu vodíku vzniká kyslík a voda.
Kyslík je
reaktantem
produktem
oxidovadlem
katalyzátorem
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Při neutralizaci jsou reaktanty
voda a sůl
kyselina a hydroxid
kyselina a vodík
kov a kyselina
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Reakce oxidu železitého s hliníkem za vzniku železa a oxidu hlinitého je
syntéza
analýza
substituce
podvojná záměna
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Dokonalým spalováním uhlíku vzniká oxid uhličitý.
Reaktanty jsou
uhlík
oxid uhličitý
uhlík a kyslík
oxid uhličitý a kyslík
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