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Chemistry

9th

grade

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structure of atom class9

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20 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt
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    A positively charged particle found in the nucleus is called a

    neutron.

    proton.

    electron.

    positron.

  • 2. Multiple Choice
    30 seconds
    1 pt
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    Electrons are subatomic particles that exist

    inside the nucleus.

    in simultaneous dimensions.

    in parallel universes.

    outside the nucleus.

  • 3. Multiple Choice
    30 seconds
    1 pt
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    Neutrons have almost exactly the same mass as

    electrons.

    positrons.

    protons.

    quarks.

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