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:[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]] is the [[temperature]] at which a pure [[liquid]] at atmospheric pressure boils.
===About Boiling Point===
*At this [[temperature]], the [[Vapour pressure|vapor pressure]] of the [[liquid]] equals the external [[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 to identify and purify [[liquid]]s.
===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]].