
化学反応式の学習
Authored by 小川 修平(大阪市)
Science
8th Grade

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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
水の電気分解の化学反応式は?
2H₂+O₂→2H₂O
H₂+O₂→H₂O
2H₂+2O₂→2H₂O
2H₂O→2H₂+O₂
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
水素と酸素の反応による水の発生の化学反応式は?
2H₂+O₂→2H₂O
H₂+O₂→H₂O
2H₂+2O₂→2H₂O
2H₂O→2H₂+O₂
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
酸化銀の熱分解の化学反応式は?
4Ag+O₂→2Ag₂O
Ag+O→AgO
2Ag+O₂→2Ag₂O
2Ag₂O→4Ag+O₂
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
炭酸水素ナトリウムの熱分解の化学反応式は?
2NaHCO₃→Na₂CO₃+CO₂+H₂O
NaHCO₃→Na₂CO₃+CO₂+H₂O
Na₂CO₃→2NaHCO₃+CO₂+H₂O
2NaHCO₃→Na₂CO₃+O₂+H₂
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
塩化銅水溶液の電気分解の化学反応式は?
CuCl₂→Cu+Cl₂
CuCl→Cu+Cl
CuCl₂→Cu+2Cl
CuCl₂→2Cu+Cl₂
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
鉄と硫黄の反応の化学反応式は?
Fe+S→FeS
Cu+S→CuS
Cu+Cl₂→CuCl₂
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
銅と硫黄の反応の化学反応式は?
Fe+S→FeS
Cu+S→CuS
Cu+Cl₂→CuCl₂
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