Final answer:
Deposition is the process by which a gas changes to a solid without passing through the liquid phase.
Step-by-step explanation:
The process by which a gas changes to a solid is called deposition. Deposition is the direct transition from the gas phase to the solid phase without passing through the liquid phase. This occurs when the temperature of the gas is reduced below its deposition point, causing the gas molecules to come together and form a solid.
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