Chemistry, Science

7th -

8thgrade

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Ponavljanje gradiva iz kemije (7. razred) - valencije

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  • 1. Multiple Choice
    1 minute
    1 pt

    Kako glasi formula željezovog (III) oksida?

    Fe3O2Fe_3O_2

    Fe2O3Fe_2O_3

    FeOFeO

    FeO2FeO_2

  • 2. Multiple Choice
    1 minute
    1 pt

    Kako glasi formula kalcijevog bromida?

    Ca2BrCa_2Br

    CaBrCaBr

    CaBr2CaBr_2

    CaBr3CaBr_3

  • 3. Multiple Choice
    1 minute
    1 pt

    Kako glasi formula kalijevog oksida?

    KO2KO_2

    KOKO

    K2OK_2O

    K3OK_3O

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