
Chemické reakcie
Authored by Lukas M
Chemistry
7th Grade
Used 6+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Horčík reaguje s kyslíkom za vzniku oxidu horečnatého.
Ktorá je to schéma?
Horčík + oxid horečnatý -> kyslík
Horčík + O2 -> oxid horečnatý
Horčík + kyslík -> oxid horečnatý
Mg + O2 -> MgO
2.
OPEN ENDED QUESTION
1 min • 15 pts
Meď + síra -> sulfid meďnatý.
Ako túto schému čítame?
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3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Vodík reaguje s kyslíkom za vzniku vody.
Ktorá je to schéma?
Vodík + kyslík -> voda
Vodík + voda -> kyslík
2H2 + O2 -> 2H2O
Voda -> vodík + kyslík
4.
MULTIPLE SELECT QUESTION
30 sec • 10 pts
Sodík + chlór -> chlorid sodný
Ktoré z týchto zložiek sú reaktanty? (viac možností)
Sodík
Chlorid
Chlorid sodný
Chlór
5.
MULTIPLE SELECT QUESTION
30 sec • 10 pts
Meď + síra -> sulfid meďnatý.
Ktoré z týchto zložiek sú reaktanty?
Meď
Sulfid
Síra
Meď
Sulfid meďnatý
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Horčík + kyslík -> oxid horečnatý.
Ktorá z týchto zložiek je produkt?
Horečnan
Oxid horečnaý
Kyslík
Horčík
Oxid horečnatý
7.
OPEN ENDED QUESTION
1 min • 15 pts
Ako sa číta táto schéma?
Peroxid vodíka -> voda + kyslík
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