Chemical Reactions and Equations Quiz
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Questions and Answers

Which of the following is an example of an exothermic reaction?

  • Heating of Lead nitrate
  • C + O → CO + 393.5 kJ (correct)
  • N2 + 3H2 → 2NH3 + 92.3 kJ
  • N2 + O2 + 180

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

  • No change in mass
  • Temporary alteration
  • New substances are produced (correct)
  • No change in energy

    • What happens to the mass of an object during rusting of iron?

  • The mass becomes lighter
  • The mass decreases
  • The mass remains constant
  • The mass increases (correct)

    • Which process results in the absorption of heat energy?

    <p>C + O → CO + 393.5 kJ</p> Signup and view all the answers

    What is another name for a chemical change?

    <p>Chemical reaction</p> Signup and view all the answers

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