Równania reakcji chemicznych - poprawa
Quiz
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Other
•
7th Grade
•
Practice Problem
•
Hard
Ilona Wojtania
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zaznacz poprawnie napisane równanie reakcji syntezy, w której powstaje tlenek potasu
K + O -> 2KO
4K + O2 -> 2K2O
2K + O2 -> K2O
2K + O2 -> K2O2
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zaznacz poprawnie napisane równanie reakcji syntezy, w której powstaje tlenek glinu
4 Al + 3 O2 -> 2 Al2O3
4 Al + O2 -> 2 Al2O3
2 Al + O2 -> Al2O3
2 Al + 3 O -> Al2O3
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zaznacz poprawnie napisane równanie reakcji syntezy, w której powstaje siarczek żelaza (III)
2 Fe + 3 S -> Fe2S3
Fe2S3 -> 2 Fe + 3 S
Fe + S -> FeS
FeS -> Fe + S
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zaznacz poprawnie napisane równanie reakcji syntezy, w której powstaje chlorek magnezu
Mg + 2 Cl -> MgCl2
MgCl2 -> Mg + Cl2
Cl2 + Mg -> Cl2Mg
Cl2 + Mg -> MgCl2
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zaznacz poprawnie napisane równanie reakcji syntezy, w której powstaje amoniak (wodorek azotu (III) )
2 NH2 -> N2 + 3 H2
2 NH2 -> N2 + 2 H2
N2 + 3 H2 -> 2 NH3
2 NH3 -> N2 + 2 H2
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zaznacz poprawnie napisane równanie reakcji syntezy, w której powstaje chlorek srebra (I)
2 Ag + Cl2 -> 2 AgCl
Ag + Cl2 -> 2 AgCl
2 AgCl -> 2 Ag + Cl2
AgCl -> 2 Ag + Cl2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zaznacz, poprawnie napisaną reakcję rozkładu tlenku rtęci (II):
2 HgO -> 2 Hg + O2
HgO -> 2 Hg + O2
2 HgO -> Hg + O2
HgO -> 2 Hg + O
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