Physics

1st

grade

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Oxigenul

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Oxigenul are simbolul chimic ...

    Ox

    O

    Og

    On

  • 2. Multiple Choice
    30 seconds
    1 pt
    Image

    O2 reprezinta....

    Atomul de oxigen

    Ozon

    Molecula de oxigen

    Formula apei

  • 3. Multiple Choice
    30 seconds
    1 pt
    Image

    In aerul atmosferic oxigenul se găsește în procent de....

    78%

    3%

    20-21%

    0,05%

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