Chemical Changes and Reactions
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Questions and Answers

Which of the following is NOT an example of a chemical change?

  • Burning
  • Rusting
  • Digesting food
  • Mixing salt and water (correct)

    • Which of the following can increase the rate of a chemical reaction?

  • Decreasing temperature
  • Increasing concentration of reactants (correct)
  • Increasing volume of reactants
  • Decreasing pressure

    • What does a gas bubble indicate in a chemical reaction?

  • The reaction is producing a gas (correct)
  • The reaction is producing a solid
  • The reaction is endothermic
  • The reaction is exothermic

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