Heat and Particle Speed Quiz
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Questions and Answers

What happens to the particles in the bigger balloon in the model?

  • They move slower due to a loss of energy
  • They stay still due to a lack of energy
  • They vibrate in place
  • They move faster due to a gain in energy (correct)

    • What causes evaporation to occur?

  • A decrease in pressure
  • A decrease in temperature
  • Molecules in the liquid slowing down
  • Molecules gaining enough energy to enter the gaseous state (correct)

    • What is the role of condensation in the phase changes from gas to liquid?

  • The liquid evaporates into the gas state
  • The liquid solidifies into a solid
  • Molecules slow down and become a liquid (correct)
  • Molecules speed up and move into a gas state

    • What effect does temperature have on evaporation?

    <p>Higher temperature speeds up evaporation</p> Signup and view all the answers

    What is the boiling point of a substance defined as?

    <p>The temperature at which molecules can change to the gaseous state throughout the liquid</p> Signup and view all the answers

    What happens to the speed of particles when a substance is heated?

    <p>The speed of particles increases</p> Signup and view all the answers

    How does the volume of a substance change when it is cooled?

    <p>The volume decreases</p> Signup and view all the answers

    Which statement best describes the movement of gaseous particles?

    <p>Gaseous particles travel in straight lines until they collide</p> Signup and view all the answers

    What is the relationship between temperature and the speed of particles?

    <p>Temperature is a measure of the average speed of particles</p> Signup and view all the answers

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

    <p>The atoms/molecules spread further apart</p> Signup and view all the answers

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