SUBLIMATION Sublimation is the phase transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.Sublimation is an endothermic process that occurs at temperatures and pressures below a substance's triple point in its phase diagram. The reverse process of sublimation is deposition or desublimation, in which a substance passes directly from a gas to a solid phase. Sublimation has also been used as a generic term to describe a solid-to-gas transition (sublimation) followed by a gas-to-solid transition (deposition).
* Sublimation requires additional energy and is an endothermic change.
Examples of sublimation
1.Carbon dioxide
Small pellets of dry ice subliming in air.
2.Naphthalene
Experimental set up for the sublimation reaction of naphthalene Solid naphthalene sublimes and form the crystal-like structure at the bottom of the watch glass.
Solid compound of naphthalene sublimed to form a crystal-like structure on the cool surface.
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