Heat Transfer and Temperature
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Questions and Answers

What happens when a substance is heated?

  • The atoms/molecules expand and shrink
  • The atoms/molecules gain energy and move faster (correct)
  • The atoms/molecules stay the same speed
  • The atoms/molecules lose energy and move slower

    • What is the relationship between temperature and the speed of atoms/molecules?

  • Temperature is a measurement of the total speed of atoms/molecules
  • Temperature is a measurement of the maximum speed of atoms/molecules
  • Temperature is unrelated to the speed of atoms/molecules
  • Temperature is a measurement of the average speed of atoms/molecules (correct)

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

  • The volume increases
  • The volume decreases (correct)
  • The volume first increases then decreases
  • The volume stays the same

    • What is the relationship between energy transfer and temperature change?

    <p>Energy transfer causes a change in the speed of atoms/molecules, which is detected as a change in temperature</p> Signup and view all the answers

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

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

    What is the primary cause of temperature change in a substance?

    <p>The transfer of energy to or from the atoms/molecules</p> Signup and view all the answers

    If the atoms/molecules in a substance are moving faster, what can be inferred about the temperature?

    <p>The temperature is higher</p> Signup and view all the answers

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

    <p>The volume increases due to the atoms/molecules expanding</p> Signup and view all the answers

    Which statement is true about the atoms/molecules themselves during the heating or cooling process?

    <p>The atoms/molecules remain the same size, but their speed changes</p> Signup and view all the answers

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

    <p>The collisions become weaker and less frequent</p> Signup and view all the answers

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