Heating and Cooling of Substances Quiz
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Questions and Answers

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

  • The speed of atoms/molecules decreases
  • The speed of atoms/molecules increases (correct)
  • The size of atoms/molecules changes
  • The speed of atoms/molecules remains constant

How does cooling a substance affect the volume of the substance?

  • The volume of the substance decreases (correct)
  • The volume of the substance increases
  • The size of atoms/molecules increases
  • The volume of the substance remains constant

What does temperature measure in a substance?

  • The speed of atoms/molecules (correct)
  • The mass of the substance
  • The density of the substance
  • The volume of the substance

How do stronger and more frequent collisions between atoms/molecules affect the volume of a substance?

<p>The volume increases (A)</p> Signup and view all the answers

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

<p>They expand (A)</p> Signup and view all the answers

How do weaker and less frequent collisions between atoms/molecules affect the volume of a substance?

<p>The volume decreases (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 move closer together. (D)</p> Signup and view all the answers

How does the speed of atoms/molecules change when energy is transferred to a substance?

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

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

<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 warmed?

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

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

<p>The atoms/molecules do not change in size. (D)</p> Signup and view all the answers

Flashcards

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

The speed of atoms/molecules increases as they gain more energy.

How does cooling a substance affect the volume?

Cooling a substance slows down the atoms/molecules, causing them to move closer together, resulting in a decrease in volume.

What does temperature measure?

Temperature is a measure of the average kinetic energy of atoms/molecules within a substance.

How do stronger and more frequent collisions affect volume?

Stronger and more frequent collisions between atoms/molecules lead to increased pressure and thus expansion of the substance.

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

When a substance is warmed, the atoms/molecules gain more energy and vibrate faster, but their size remains the same.

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How do weaker and less frequent collisions affect volume?

Weaker and less frequent collisions between atoms/molecules lead to decreased pressure and thus contraction of the substance.

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

When a substance is cooled, the atoms/molecules lose energy and move slower, resulting in a decrease in volume as they move closer together.

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How does the speed of atoms/molecules change when energy is transferred?

The speed of atoms/molecules increases directly with the amount of energy transferred to the substance.

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What is the relationship between speed and temperature?

Temperature is directly proportional to the average kinetic energy of atoms/molecules.

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What happens to collisions when a substance is warmed?

Warming a substance increases the energy of atoms/molecules, causing them to collide with more force and frequency.

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

While the atoms/molecules gain energy and vibrate faster, their individual size remains unchanged when a substance is warmed.

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