Understanding Heating and Cooling of Substances
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Understanding Heating and Cooling of Substances

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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)
  • The atoms/molecules themselves expand, causing the volume of the substance to increase.
  • Energy is transferred from the substance, causing the atoms/molecules to move slower and the volume to decrease.
  • The atoms/molecules themselves shrink, causing the volume of the substance to decrease.
  • What is the relationship between the speed of atoms/molecules and temperature?

  • Temperature is not a measurement of the average speed of atoms/molecules.
  • The slower the atoms/molecules move, the higher the temperature.
  • There is no relationship between the speed of atoms/molecules and temperature.
  • The faster the atoms/molecules move, the higher the temperature. (correct)
  • What happens to the volume of a substance when it is cooled?

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

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

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