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Heating and Cooling of Substances
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Heating and Cooling of Substances

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@RosyPluto

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Questions and Answers

What happens when a substance is heated?

  • The atoms/molecules themselves expand
  • The atoms/molecules lose energy and move slower
  • The atoms/molecules gain energy and move faster (correct)
  • The volume of the substance decreases

    • Which statement about temperature is true?

  • Temperature is a measurement of the average speed of atoms/molecules (correct)
  • Higher temperature means slower moving atoms/molecules
  • Temperature is a measurement of the size of atoms/molecules
  • Lower temperature means atoms/molecules are not moving

    • What happens when a substance is cooled?

  • The atoms/molecules gain energy and move faster
  • The atoms/molecules spread further apart
  • The atoms/molecules lose energy and move slower (correct)
  • The volume of the substance increases

    • How do gaseous atoms/molecules travel?

    <p>In straight lines until they collide</p> Signup and view all the answers

    How can we detect an odor in the air?

    <p>The odor particles travel in straight lines to our noses</p> Signup and view all the answers

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