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→About Boiling Point
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Boiling points; metals versus non-metals, page 52, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Boiling points; trends in Periodic Table, pages 134, 139, Gateway GCSE Chemistry, Oxford, OCR '']
==Key Stage 5==
===Meaning===
The [[Boiling Point|boiling point]] is the [[temperature]] at which a pure [[liquid]] at [[Atmospheric Pressure|atmospheric pressure]] [[boil]]s.
===About Boiling Point===
*[[Boiling Point|Boiling point]] is defined as the [[temperature]] at which the [[Vapour Pressure|vapour pressure]] of the [[liquid]] equals the [[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 and therefore can be used to characterise and identify substances.
*[[Boiling Point|Boiling point]] can be used to identify and purify [[liquid]]s as impurities in a [[liquid]] can raise or lower their [[Boiling Point|boiling point]].
*The [[Boiling Point|boiling point]] is a key concept in [[thermodynamic]]s and [[State Change|phase transitions]].
===Examples===
*The [[Boiling Point|boiling point]] of [[water]] at sea level is 100°C.
*[[Ethanol]] [[Boiling|boil]]s at around 78°C at standard [[Atmospheric Pressure|atmospheric pressure]].