Pure substances and mixtures The meaning of pure The word 'pure' is used in chemistry in a different way from its everyday meaning. For example, shops sell cartons labelled as 'pure' orange juice.

Characteristic: Pure substances have definite and constant physical and chemical properties, such as melting point, boiling point, density and chemical reactivity. Examples include elements like ...

A pure substance is a single element close elementA pure substance which is made from only one type of atom. Elements are listed on the periodic table. An element cannot be broken down into ...

Books Received Published: 02 March 1929 Pure Substances: their Preparation, Properties, and Uses T. M. LOWRY Nature 123, 308–310 (1929) Cite this article ...