Multiple Choice
Which process describes the direct transition of a solid into a vapor without passing through the liquid phase?
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13. Liquids, Solids & Intermolecular Forces
Phase Diagrams
Multiple Choice
Which of the following best describes what occurs during condensation?
A
A gas transforms into a liquid as it loses energy.
B
A liquid transforms into a solid as it loses energy.
C
A liquid transforms into a gas as it gains energy.
D
A solid transforms directly into a gas without passing through the liquid phase.
Verified step by step guidance1
Understand the meaning of condensation in terms of phase changes: condensation is the process where a substance changes from the gas phase to the liquid phase.
Recall that phase changes involve energy transfer; specifically, condensation occurs when a gas loses energy (usually in the form of heat) and particles slow down enough to come closer together and form a liquid.
Compare condensation with other phase changes: freezing (liquid to solid), vaporization (liquid to gas), and sublimation (solid to gas without liquid phase).
Identify that condensation is distinct because it involves a gas turning into a liquid, not a liquid turning into a solid or a solid turning directly into a gas.
Conclude that the best description of condensation is 'A gas transforms into a liquid as it loses energy.'
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