Evaporation and Boiling Quiz
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Questions and Answers

Which statement about evaporation is true?

  • Evaporation stops once the liquid starts boiling
  • Evaporation only occurs at the surface of a liquid
  • Evaporation requires the liquid to be at its boiling point
  • Evaporation can occur at any temperature (correct)

    • What causes molecules to evaporate from the surface of a liquid?

  • The molecules are moving fast enough to escape the liquid
  • The liquid is at its boiling point
  • Both a and b (correct)
  • Air particles collide with the surface, providing energy for molecules to escape

    • Why does a drop of rubbing alcohol evaporate faster on your hand than on a table?

  • The alcohol molecules are more attracted to your skin
  • Air particles collide with the alcohol more frequently on your hand
  • Your hand is at a higher temperature than the table (correct)
  • The alcohol molecules can escape the liquid more easily on your hand

    • What happens when a liquid boils?

    <p>Molecules throughout the liquid enter the gaseous state (B)</p> Signup and view all the answers

    What is the boiling point of a substance?

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

    What is the primary reason for condensation to occur on cool surfaces?

    <p>The molecules in the gaseous state slow down and form liquid droplets (D)</p> Signup and view all the answers

    Which of the following is NOT an example of condensation mentioned in the text?

    <p>Melting of ice cubes (B)</p> Signup and view all the answers

    What happens when the temperature drops during a common household activity like cooking?

    <p>The steam from boiling food forms liquid droplets on surfaces (D)</p> Signup and view all the answers

    What is the primary process described in the text that helps maintain equilibrium in nature?

    <p>The water cycle (B)</p> Signup and view all the answers

    Which of the following statements best describes the formation of dew?

    <p>Dew forms when air temperature falls below the dewpoint as moist air cools overnight (B)</p> Signup and view all the answers

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