Heat Transfer and Temperature
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Questions and Answers

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

  • The speed of atoms/molecules increases (correct)
  • The speed of atoms/molecules decreases
  • The atoms/molecules themselves expand
  • The speed of atoms/molecules remains the same

How is temperature related to the motion of atoms/molecules?

  • Temperature is a measure of the density of atoms/molecules
  • Temperature is a measure of the average speed of atoms/molecules (correct)
  • Temperature is a measure of the mass of atoms/molecules
  • Temperature is a measure of the size of atoms/molecules

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

  • The volume of the substance increases
  • The volume of the substance decreases (correct)
  • The volume of the substance remains the same
  • The atoms/molecules themselves shrink

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

<p>The collisions become stronger and more frequent (B)</p> Signup and view all the answers

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

<p>The atoms/molecules themselves do not expand or shrink (D)</p> Signup and view all the answers

What is the relationship between energy transfer and the temperature of a substance?

<p>When energy is transferred to a substance, its temperature increases. (D)</p> Signup and view all the answers

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

<p>The volume increases as the atoms/molecules spread further apart. (A)</p> Signup and view all the answers

What is the relationship between the speed of atoms/molecules and temperature?

<p>The faster the atoms/molecules move, the higher the temperature. (D)</p> Signup and view all the answers

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

<p>The collisions become weaker and less frequent. (B)</p> Signup and view all the answers

What is the process called when a gas transitions to a liquid state?

<p>Condensation (D)</p> Signup and view all the answers

What is the effect of cooling a substance on the atoms/molecules?

<p>The atoms/molecules lose energy and move slower. (A)</p> Signup and view all the answers

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

<p>The volume decreases as the atoms/molecules get closer together. (A)</p> Signup and view all the answers

What is the relationship between the speed of atoms/molecules and the strength and frequency of their collisions?

<p>Faster moving atoms/molecules have stronger and more frequent collisions. (B)</p> Signup and view all the answers

What happens to the atoms/molecules themselves when a substance is heated or cooled?

<p>The atoms/molecules do not expand or shrink in size. (B)</p> Signup and view all the answers

How does the formation of water droplets on a cold drink relate to the concept of condensation?

<p>The water droplets form due to the gas molecules in the air transitioning to a liquid state. (A)</p> Signup and view all the answers

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