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Biology

9th

grade

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Chemistry of Life

200
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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    The three particles that make up an atom are

    protons, neutrons, and isotopes

    protons, neutrons, and electrons

    positives, negatives, electrons

    protons, ions, and electrons

  • 2. Multiple Choice
    30 seconds
    1 pt

    The nucleus is made up of

    protons and electrons

    protons, neutrons, and electrons

    neutrons

    protons and neutrons

  • 3. Multiple Choice
    30 seconds
    1 pt

    Isotopes are atoms of the same element with the same number of protons and

    a different number of electrons

    a different number of molecules

    a different number of neutrons

    a same number of neutrons

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