Chemistry

6th -

7thgrade

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Matter and Chemical Formulae

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    The smallest unit of matter which can exist independently is called

    an atom

    a molecule

    a compound

    an element

  • 2. Multiple Choice
    30 seconds
    1 pt

    The total number of known elements are

    118

    119

    120

    108

  • 3. Multiple Choice
    30 seconds
    1 pt

    The chemical symbol for calcium is

    Ca

    Cl

    Cu

    Ce

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