Question

5. Why is sublimation a physical change?
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Answer 1

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.

Answer 2

Sublimation is a physical change as it includes the change in physical state i.e. from solid to gas.