Science

9th

grade

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Lesson Test

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20 questions

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  • 1. Multiple Choice
    3 minutes
    1 pt
    What is at the center of every atom?
    An electron
    A compound
    A molecule
    A nucleus
  • 2. Multiple Choice
    30 seconds
    1 pt
    Image
    The particles with no charge in an atom are the _______.
    electrons
    neutrons
    protons
    protons and neutrons
  • 3. Multiple Choice
    30 seconds
    1 pt
    Image
    Nucleus, positive
    Nucleus, negative
    Nucleus, neutral
    Electron Cloud, positive
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