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In chemistry this is not considered 'pure' and is a mixture. Miss Fong: Today we're going to be looking at pure and impure substances and how we can test for purity. First, let's cover the basics.

In chemistry this is not considered 'pure' and is a mixture. Miss Fong: Today we're going to be looking at pure and impure substances and how we can test for purity. First, let's cover the basics.