Chemistry

9th -

10thgrade

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Chemistry Science

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15 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt
    Define Reactants
    the building block of matter
    a description of a reaction
    the substances produced in a reaction
    the starting substances in a chemical reaction
  • 2. Multiple Choice
    30 seconds
    1 pt
    Which is a sign of a chemical reaction?
    chemical properties change
    a gas forms
    a solid forms
    physical properties change
  • 3. Multiple Choice
    30 seconds
    1 pt
    Explain why subscripts cannot change when balancing a chemical equation
    Gives the amount of atoms
    You can change subscripts
    The identity of a substance changes
    None of the above
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