Chemical Reactions and Equations Quiz
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Questions and Answers

Which of the following is a characteristic of a chemical change?

  • No change in energy occurs
  • No change in mass occurs
  • New substances are produced (correct)
  • The alteration is temporary

    • Why is rusting of iron considered a chemical change?

  • The alteration is temporary
  • The mass of the object decreases
  • New substance, iron oxide, is created (correct)
  • No change in energy occurs

    • What is an exothermic reaction characterized by?

  • No change in energy
  • Production of light energy
  • Release of heat energy (correct)
  • Absorption of heat energy

    • What characterizes an endothermic reaction?

    <p>Involves absorption of heat energy</p> Signup and view all the answers

    What is recorded along with the products in an exothermic reaction?

    <p>Amount of heat produced</p> Signup and view all the answers

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