Chemistry

1st

grade

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Formule chimice

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  • Multiple Choice
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    30 seconds
    1 pt

    Molecula hidrogenului este formată din

    2 atomi

    1 atom

  • Multiple Choice
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    30 seconds
    1 pt

    Au molecule diatomice

    carbonul, oxigenul, fierul

    azotul, clorul, oxigenul

  • Multiple Choice
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    30 seconds
    1 pt

    Formula chimică a oxidului de magneziu este:

    CaO

    MgO

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