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What is the process in which ice or snow changes directly into water vapour called?

Answer and explanation

Correct answer: Sublimation

Correct answer: B, sublimation. Matter can change between solid, liquid, and gas. In sublimation, a solid changes directly into a gas without first becoming a liquid. Ice or snow can slowly lose particles directly to the air as water vapour under suitable environmental conditions. A, evaporation, is specifically the change of liquid water into water vapour; it begins with a liquid. C, condensation, is the reverse type of change from gas to liquid, such as water vapour forming droplets in clouds. D, melting, changes solid ice into liquid water. The key clue is “directly”: solid to gas means sublimation. A useful memory cue is S-G: Sublimation goes from Solid directly to Gas.

Related tags

SublimationPhase-ChangesIceWater-CycleHydrological CycleThe Living WorldBiologyClass 11 Mcq

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