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IB Chemistry Test Prep

Category - IB Chemistry

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What term classifies a phase change from a solid directly to a gas?

Vaporization
Deposition
Effervesence
Fusion
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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