Heat Transfer and Temperature

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Questions and Answers

What happens when a substance is heated?

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

What is the result of atoms/molecules moving faster?

  • The atoms/molecules compress and move closer together
  • The volume of the substance decreases
  • The temperature decreases
  • The temperature increases (correct)

When a substance is cooled, what happens to the volume of the substance?

  • The volume remains the same
  • The volume changes unpredictably
  • The volume decreases (correct)
  • The volume increases

What is the relationship between the strength and frequency of collisions among atoms/molecules and temperature?

<p>Stronger and more frequent collisions indicate a higher temperature (B)</p> Signup and view all the answers

Which of the following statements is true about the atoms/molecules themselves?

<p>They remain the same size regardless of temperature changes (D)</p> Signup and view all the answers

What is the difference between heating and cooling a substance?

<p>Heating transfers energy to the substance, while cooling transfers energy from the substance (D)</p> Signup and view all the answers

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