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Feb16-12, 04:53 PM
P: 155
Thermal stability vs melting point

Quote Quote by sgstudent View Post
Oh ok. So when I say that Na2O is more thermal stable than MgO, I cannot use that to determine its melting point? Oh and is it that melting is a physics change while decomposition is a chemical change?
Exactly. There is no connection between meting point and decomposition point. When a substance decomposes it is no longer the same substance it was before it decomposed. It is now a different substance.