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Science

10th

grade

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Chemistry

180
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10 questions

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  • 1. Multiple Choice
    20 seconds
    1 pt

    The smallest unit of matter in the universe is the __________.

    molecule

    compound

    atom

    does it really matter?

  • 2. Multiple Choice
    20 seconds
    1 pt

    All of the following are subatomic particles, EXCEPT:

    proton

    compound

    electron

    neutron

  • 3. Multiple Choice
    20 seconds
    1 pt

    The number of protons an atom has is its _________ number.

    neurotic

    covalent

    ionic

    atomic

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