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Why impurities decrease melting points.

  1. Mar 24, 2010 #1
    anyone tell me why melting points of any substance decrease when we add any other material
  2. jcsd
  3. Mar 24, 2010 #2


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    They don't always; consider http://www.spaceflight.esa.int/impress/text/education/Images/Solidification/PhaseDiagrams/Phase_Diagrams_Image_001.png" [Broken], for example. Do you have a particular system in mind?
    Last edited by a moderator: May 4, 2017
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