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sublimation
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Sublimation
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Conversion of a solid to vapour without passing through the liquid phase. It is one of the changes of state of matter.
Sublimation depends on the fact that the boiling point of the solid substance is lower than its melting point at atmospheric pressure. Thus by increasing pressure, a substance that sublimes can be made to go through a liquid stage before passing into the vapour state.
Some substances that do not sublime at atmospheric pressure can be made to do so at low pressures. This is the principle of freeze-drying, during which ice sublimes at low pressure.
© RM 2009. Helicon Publishing is division of RM.
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boiling
boiling point
Brownian movement
centrifuge
change of state
chromatography
condensation (chemistry)
conservation of mass
crystallization
density
diffusion
dissolution
distillation
energy barrier
energy transfer
evaporation
expansion
filtration
fractional distillation
fractionating column
freezing
freezing point
gas
gas laws
insoluble
kinetic theory
latent heat
liquid
melting point
particle theory
precipitate
purification
purity
separating funnel
separation
sodium chloride
solid
solidification
solubility
sublimation
suspension (chemistry)
thermal expansion
vapour
viscosity
boiling point
Brownian movement
centrifuge
change of state
chromatography
condensation (chemistry)
conservation of mass
crystallization
density
diffusion
dissolution
distillation
energy barrier
energy transfer
evaporation
expansion
filtration
fractional distillation
fractionating column
freezing
freezing point
gas
gas laws
insoluble
kinetic theory
latent heat
liquid
melting point
particle theory
precipitate
purification
purity
separating funnel
separation
sodium chloride
solid
solidification
solubility
sublimation
suspension (chemistry)
thermal expansion
vapour
viscosity
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