Harry Caul is an invader of privacy. The best in the business. 15 episodes. 15 hours. 1 shift.

Bridget Jones: Mad About the Boy Link to Bridget Jones: Mad About the Boy ...

Key fact An impure substance is a type of mixture, so melting points can be used to find out if a substance is pure or impure. Impure substances tend to have a slightly lower melting point than ...

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.