Chemistry

8th -

9thgrade

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化学式50選

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50 questions

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  • 1. Multiple Choice
    20 seconds
    1 pt
    H₂O
    NH₃
    H₂O₂
    NO₂
  • 2. Multiple Choice
    20 seconds
    1 pt
    アンモニア
    NH₃
    H₂O
    H₂O₂
    NO₂
  • 3. Multiple Choice
    20 seconds
    1 pt
    一酸化炭素
    CO
    CO₂
    NO
    NO₂
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