Heat Transfer and Temperature
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Questions and Answers

What happens to the speed of atoms/molecules when a substance is heated?

  • The speed of atoms/molecules decreases
  • The speed of atoms/molecules increases (correct)
  • The atoms/molecules themselves expand
  • The speed of atoms/molecules remains the same

    • Which of the following statements about temperature is correct?

  • Temperature is a measure of the size of atoms/molecules
  • Temperature is a measure of the total energy of a substance
  • Temperature is a measure of the average speed of atoms/molecules (correct)
  • Temperature is a measure of the mass of a substance

    • What happens to the volume of a substance when it is cooled?

  • The volume increases
  • The atoms/molecules themselves shrink
  • The volume decreases (correct)
  • The volume remains the same

    • Which of the following statements about the collisions of atoms/molecules is true when a substance is heated?

    <p>The collisions become stronger and more frequent</p> Signup and view all the answers

    What happens to the atoms/molecules themselves when a substance is heated or cooled?

    <p>The atoms/molecules themselves do not expand or shrink</p> Signup and view all the answers

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