Chemistry
Differentiate between Pure and impure substances.
Elements, Compounds & Mixtures
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Answer
Difference between Pure and impure substances:
| Pure substance | Impure substance |
|---|---|
| Pure substances have a definite chemical composition and definite physical and chemical properties. | Impure substances are made up of two or more pure substances mixed together in any proportion. They do not have any definite set of properties. |
| Pure substances are all homogeneous, i.e. their composition is uniform throughout the bulk. | Impure substances may be homogeneous or heterogeneous i.e. their composition is not uniform throughout the bulk. |
| Examples are gold, silver, water, sodium chloride etc. | Examples are air, sea water, solution of sugar in water etc. |
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