Heat Transfer and Temperature
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Questions and Answers

What happens when a substance is heated?

  • Energy is transferred to the substance, causing the atoms/molecules to move faster and the volume to increase. (correct)
  • Energy is transferred from the substance, causing the atoms/molecules to move slower and the volume to decrease.
  • The atoms/molecules expand, causing the volume to increase.
  • The atoms/molecules themselves shrink in size, causing the volume to decrease.
  • How is temperature related to the speed of atoms/molecules in a substance?

  • Temperature is a measurement of the total energy of the atoms/molecules.
  • Temperature is not related to the speed of atoms/molecules.
  • Temperature is a measurement of the average speed of atoms/molecules. (correct)
  • Temperature is a measurement of the distance between atoms/molecules.
  • What happens to the volume of a substance when it is cooled?

  • The volume increases as the atoms/molecules move further apart.
  • The volume increases as the atoms/molecules move closer together.
  • The volume remains the same as the atoms/molecules do not change their spacing.
  • The volume decreases as the atoms/molecules move closer together. (correct)
  • How do the collisions between atoms/molecules change when a substance is heated?

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

    Do the atoms/molecules themselves expand or shrink when a substance is heated or cooled?

    <p>The atoms/molecules do not change in size, only their spacing changes.</p> Signup and view all the answers

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