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Sublimation

6 Answers
What is sublimation ? Give an example of sublimation.
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Sublimation is the transition of a substance from the solid phase to the gas phase without undergoing intermediate liquification. Sublimation is an endothermic phase transition that occurs at temperatures and pressures below a substance's triple point in its phase diagram.

At normal pressures, most chemical compounds and elements possess three different states at different temperatures. In these cases the transition from the solid to the gaseous state requires an intermediate liquid state. However, for some elements (carbon and arsenic) or substances at some pressures the material may pass directly from a solid into the gaseous state. This can occur if the atmospheric pressure exerted on the substance is too low to stop the molecules from escaping from the solid state.

The reverse process of sublimation is deposition. The formation of frost is an example of meteorological deposition.
Contents
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* 1 Examples
o 1.1 Carbon dioxide
o 1.2 Water
o 1.3 Other compounds
* 2 Sublimation purification
* 3 Historical usage
* 4 See also
* 5 References

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In chemistry, sublimation (from the Latin, sublimis - lifted up) means a substance transforms from a solid to a gas without passing through a liquid stage. In many low humidity areas, snow and ice can sublimate. When this happens, little if any water is retained in the soil.

When weather is really cold (well below freezing) with low humidity for several days straight, ice will shrink by becoming gaseous rather than melting. Moth balls also sublime, the chunks gradually get smaller with time even though never melted.

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T

Sublimation is the name for the movement of water from solid to gas without going through the liquid stage. It occurs below the triple point in the process of freeze drying something. In freeze drying the product is first frozen and then placed in a vacuum chamber while heat is applied. This forces the ice to sublimate and move out of the frozen product directly into gas state. Freeze drying preserves the structure of the food better because gas molecules are smaller than water molecules. Hopefully that helps you out.

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I

I will make it simple .The conversion of solid state direct into gas state without going into liquid state. For example burn a paper, most of the paper will turn into smoke(gas) and a little will remain ,notice that 0% of the paper is turned into liquid. This type of conversion is known as ''sublimation''
:-)glad to help you:-)

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G

Its a process by which a substance passes from Solid state to Gaseous state without passing through the liquid phase.
For eg, when you burn camphor, it directly turns into gas.

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S

In chemistry, sublimation means a substance transforms from a solid into a gas without passing through a liquid stage. An example of sublimation Is Camphor.

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