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How Purity affects
Melting and Boiling Points of Pure Substances
A melting and boiling points of a pure substance will always take place at a constant temperature
How does Impurities affect the Melting and Boiling Points of Substances
1. The melting and boiling point of impure substances takes place over a range of temperatures
2. Impurities lower the melting point of solids and increase the boiling point of liquids
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