Chemistry

8th

grade

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化学式

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13 questions

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  • Multiple Choice
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    30 seconds
    1 pt

    酸素

    O2

    H2

    NH3

    H2O

  • Multiple Choice
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    30 seconds
    1 pt

    水素

    O2

    H2

    NH3

    H2O

  • Multiple Choice
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    30 seconds
    1 pt

    アンモニア

    O2

    H2

    NH3

    H2O

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