IB Chemistry Test Prep

Category - IB Chemistry

What term classifies a phase change from a solid directly to a gas?
  1. Vaporization
  2. Deposition
  3. Effervesence
  4. Fusion
  5. Sublimation
Explanation
Answer: Sublimation

Vaporization is a phase change from liquid to gas. Deposition is a phase change from gas to solid. Effervescence does not describe a phase change. Fusion is a phase change from solid to liquid. Therefore, sublimation must be a phase change from solid to gas.
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