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化学反応式の学習

Authored by 小川 修平(大阪市)

Science

8th Grade

化学反応式の学習
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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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