Chemistry

7th -

9thgrade

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Chemical Reactions

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  • 1. Multiple Choice
    45 seconds
    1 pt
    The substances that are present before a reaction are the...
    reactants
    products
    both of these
    neither of these
  • 2. Multiple Choice
    45 seconds
    1 pt
    ___________________ are the elements or compounds that are formed in a chemical
    reaction.
    Polymers
    Bonds
    Reactants
    Products
  • 3. Multiple Choice
    45 seconds
    1 pt
    _______________ can speed up the rate of reactions and/or lower the amount of energy needed for
    the reaction to take place.
    Carbohydrates
    Fuel source
    Chemical
    Catalyst
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