Pure substances
Lesson 4 / 11
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I can describe the difference between a pure substance and a mixture.
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A pure material is made of only one type of substance
A pure material has a fixed melting point and boiling point
Impurities change the melting and boiling point of a material
A mixture contains two or more types of substances which can be easily separated
Mixtures melt or boil over a range of temperatures
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