what us sublimation and difference between sublimation and melting
Answers
sublimation:-
the process where solid turns into gas without change into liquid is called sublimatiom.
melting:-
the process by which a substance change solid phase into liquid phase is called melting.
Sublimation means the change of phase from solid to gaseous form is called sublimation process.
Melting
The melting point of a substance is the temperature at which it changes state from solid to liquid.
At the melting point the solid and liquid phase exist in equilibrium.
The melting point of a substance depends on pressure and is usually specified at a standard pressure such as 1 atmosphere or 100 kPa.
Sublimation
Sublimation means the change of phase from solid to gaseous form is called sublimation process.
Sublimation is an endothermic process that occurs at temperatures and pressures below a substance's triple point in its phase diagram, which corresponds to the lowest pressure at which the substance can exist as a liquid.
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).
While a transition from liquid to gas is described as evaporation if it occurs below the boiling point of the liquid, and as boiling if it occurs at the boiling point, there is no such distinction within the solid-to-gas transition, which is always described as sublimation.
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