Question
State four differences between compounds and mixtures.
✓
Answer
Compound:
Mixture:
- A compound is a pure substance.
- Compounds are always homogeneous.
- 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.
- Formation of a compound involves a change in energy.
- Compounds have a specific set of properties.
- Components of compounds can be separated only by complex chemical processes.
Mixture:
- A mixture is an impure substance.
- Mixtures may be homogeneous or heterogeneous.
- A mixture has no fixed composition, i.e., it is formed by mixing two or more substances in any ratio without any chemical reaction.
- Formation of a mixture does not involve any change in energy.
- Mixtures do not have any specific set of properties.
- Components of mixtures can be separated by simple physical methods.
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