| Compounds | Mixtures |
| 1. | Compounds are formed as a result of chemical reactions between two or more elements or Compounds. | Mixtures are formed by simply mixing two or more constituents. There are no chemical reactions between the constituents. |
| 2. | The components of a compound are always present in a definite ratio by mass. | The components of a mixture may be present in any ratio. |
| 3. | The properties of a compound are entirely different from its constituents. | The properties of a mixture are same as those of its constituents. |
| 4. | Compound are always homogeneous in nature. | Mixtures are usually heterogeneous (except in solutions). |
| 5. | Compound formation is accompanied by absorption or evolution of light, heat or electrical energy. | Heat, light or electrical energy may not be evolved or absorbed during the formation of a mixture. |
| 6. | Melting and boiling points of a compound are usually sharp and fixed. | Melting and boiling points of a mixture are usually not sharp and fixed. |
| 7. | The constituents of a compound cannot be separated by physical or mechanical means. They can, however, be separated by chemical methods. | The components of a mixture can be easily separated by physical methods. |
