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→About Boiling Point
===About Boiling Point===
*At this [[Boiling Point|Boiling point]] is defined as the [[temperature]], at which the [[Vapour pressurePressure|vapor vapour pressure]] of the [[liquid]] equals the external [[Atmospheric Pressure|atmospheric pressure]].
*[[Boiling Point|Boiling points]] vary with altitude due to changes in [[Atmospheric Pressure|atmospheric pressure]].
*The [[Boiling Point|boiling point]] is a characteristic property of a substance.
*Used [[Boiling Point|Boiling point]] can be used to identify and purify [[liquid]]sas impurities in a [[liquid]] can raise or lower its [[Boiling Point|boiling point]].
===Examples===
*The [[Boiling Point|boiling point]] of [[water]] at sea level is 100°C.
*[[Ethanol]] boils at around 78°C at standard [[Atmospheric Pressure|atmospheric pressure]].