Sublimation
Sublimation of an element or substance is a conversion between the solid and the gaseous states with no liquid intermediate stage.At normal pressures, most chemical compounds and elements possess three different states at different temperatures.
Carbon dioxide is a common example of a compound that sublimes at normal pressures (see dry ice). Iodine is another example. Snow and water ice also sublime, though more slowly, at below-freezing temperatures.
See also: Phases of matter, deposition
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