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Question
State four difference between compounds and mixtures.
Solution
| Compound | Mixture |
| 1. A compound is a pure substance. | 1. A mixture is an impure substance. |
| 2. Compounds are always homogeneous. | 2. Mixtures may be homogeneous or heterogeneous. |
| 3. A compound has a fixed composition, i.e., it is formed when two or more pure substances chemically combine in a definite ratio by mass. | 3. A mixture has no fixed composition, i.e., it is formed by mixing two or more substances in any ratio without any chemical reaction. |
| 4. Formation of a compound involves change in energy. | 4. Formation of a mixture does not involve any change in energy. |
| 5. Compounds have specific set of properties. | 5. Mixtures do not have any specific set of properties. |
| 6. Components of compounds can be separated only by complex chemical processes. | 6. Components of mixtures can be separated by simple physical methods. |
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