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A model shows water vapor turning directly into solid ice without passing through the liquid phase. Which change of state is represented in this model?
A
Freezing
B
Boiling
C
Deposition
D
Condensation
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1
Identify the process described: water vapor (gas phase) turning directly into solid ice (solid phase) without becoming liquid first.
Recall the common phase changes: freezing (liquid to solid), boiling (liquid to gas), condensation (gas to liquid), and deposition (gas to solid).
Understand that deposition is the phase change where a gas turns directly into a solid, bypassing the liquid phase.
Compare the given scenario to the definitions and recognize that the direct gas-to-solid transition matches deposition.
Conclude that the change of state represented in the model is deposition.