what is the sublimation of physical change
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The term sublimation refers to a physical change of state and is not used to describe the transformation of a solid to a gas in a chemical reaction.
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Sublimation is a physical change. When a substance sublimes, it changes from a solid to a gas without going through the liquid phase. This does not result in a chemical change, though. ... Dry ice is carbon dioxide in the solid phase.
The term sublimation refers to a physical change of state and is not used to describe the transformation of a solid to a gas in a chemical reaction. For example, the dissociation on heating of solid ammonium chloride into hydrogen chloride and ammonia is not sublimation but a chemical reaction.
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