Science

10th

grade

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11 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    What is atomic number?

    proton number

    electron number

  • 2. Multiple Choice
    1 minute
    1 pt
    What is the mass number defined as?
    the number of protons
    the number of protons and neutrons
    the number of neutrons
    the number of protons and electrons
  • 3. Multiple Choice
    30 seconds
    1 pt
    Which particle has a positive charge?
    electron
    orbital
    proton
    neutron
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