Energy Transfer and Temperature Change Quiz
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Questions and Answers

What happens when a substance is heated?

  • The atoms/molecules lose energy and move slower
  • The atoms/molecules gain energy and move faster (correct)
  • The atoms/molecules contract in size
  • The atoms/molecules expand in size

    • How is temperature related to the motion of atoms/molecules?

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

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

  • The volume changes unpredictably
  • The volume decreases as the atoms/molecules get closer together (correct)
  • The volume increases as the atoms/molecules spread further apart
  • The volume remains the same

    • Which of the following statements is true about the atoms/molecules themselves during heating or cooling?

    <p>The atoms/molecules remain the same size during heating and cooling</p> Signup and view all the answers

    What happens to the collisions between atoms/molecules when a substance is heated?

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

    What is the main difference between evaporation and boiling?

    <p>Evaporation only happens on the surface, while boiling occurs throughout the liquid.</p> Signup and view all the answers

    Why does the drop of rubbing alcohol evaporate faster on your hand than on the table?

    <p>Due to the difference in the temperature of your hand and the table.</p> Signup and view all the answers

    What role do air particles play in the process of evaporation?

    <p>Air particles provide energy to liquid molecules at the surface, aiding in their escape.</p> Signup and view all the answers

    What effect does an increase in temperature have on the rate of evaporation?

    <p>Higher temperatures speed up evaporation.</p> Signup and view all the answers

    At what point does a liquid reach its boiling point?

    <p>When all molecules in the liquid have turned into a gas.</p> Signup and view all the answers

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