Temperature and Substances Study Guide
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Questions and Answers

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

  • They expand and decrease in volume
  • They gain energy and move faster (correct)
  • They lose energy and move slower
  • They stay the same speed

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

  • The atoms/molecules stop colliding
  • The collisions become stronger and more frequent (correct)
  • The collisions do not change
  • The collisions become weaker and less frequent

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

  • The volume decreases (correct)
  • The volume increases
  • The volume stays the same
  • The atoms/molecules expand

    • How do gaseous atoms/molecules travel?

    <p>They travel in straight lines until they collide with each other or an object</p> Signup and view all the answers

    What is the process called when molecules in the gaseous state slow down and become a liquid?

    <p>Condensation</p> Signup and view all the answers

    What is the temperature at which molecules throughout a liquid can change to the gaseous state?

    <p>The boiling point</p> Signup and view all the answers

    What is the difference between evaporation and boiling?

    <p>Evaporation happens at any temperature, while boiling requires a specific temperature.</p> Signup and view all the answers

    What happens to the speed of atoms/molecules when a substance is heated?

    <p>The speed of atoms/molecules increases.</p> Signup and view all the answers

    Which of the following statements about temperature is correct?

    <p>Temperature is a measure of the average kinetic energy of atoms/molecules.</p> Signup and view all the answers

    What happens when energy is transferred from a substance?

    <p>The speed of atoms/molecules decreases, and the temperature drops.</p> Signup and view all the answers

    Which process involves the gain of energy by a substance?

    <p>Heating</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 moving farther apart.</p> Signup and view all the answers

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