Matter and State Changes

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Questions and Answers

What happens when a substance evaporates?

  • It changes from a liquid to a gas. (correct)
  • It remains in the same state.
  • It changes from a gas to a liquid.
  • It becomes a solid.

What is the process called when a substance changes from a gas to a liquid?

  • Sublimation
  • Condensation (correct)
  • Deposition
  • Evaporation

What happens to the atoms or molecules when thermal energy is added to a liquid?

  • They move slower and become more dense.
  • They disappear.
  • They remain in the same state.
  • They move faster and farther apart. (correct)

What is sublimation?

<p>The process of a solid changing directly to a gas. (B)</p> Signup and view all the answers

What is deposition?

<p>The process of a gas changing directly to a solid. (A)</p> Signup and view all the answers

What happens to the atoms or molecules when thermal energy is removed from a gas?

<p>They move slower and become more dense. (C)</p> Signup and view all the answers

At what temperature does water freeze?

<p>32°F or 0°C (D)</p> Signup and view all the answers

What is the boiling point of water?

<p>212°F or 100°C (B)</p> Signup and view all the answers

What is an example of sublimation?

<p>Dry ice turning directly into carbon dioxide gas. (A)</p> Signup and view all the answers

What is an example of deposition?

<p>Frost forming on a cold surface. (C)</p> Signup and view all the answers

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