The components of a mixture keep their own identity when they combine, so they retain their physical properties. Examples of physical properties include boiling point, ability to dissolve, and particle size. When components of mixtures vary in physical properties such as these, processes such as boiling, dissolving, or filtering can be used to separate them.

Properties of a Mixture
Mixtures are made up of two or more substances that are physically combined. Here are three properties of mixtures:

1. Composition
- Mixtures have variable composition, meaning that the proportions of the different substances in a mixture can vary. For example, a mixture of salt and sugar can have different ratios of salt to sugar.

2. Separation
- The components of a mixture can be separated through physical means, such as filtration, evaporation, or distillation. For example, a mixture of sand and iron filings can be separated using a magnet.

3. Properties of Components
- Mixtures retain the properties of their individual components. This means that each substance in a mixture maintains its own characteristics, such as color, taste, and texture. For example, a mixture of red and blue marbles will still have marbles that are red and marbles that are blue.
Overall, mixtures are heterogeneous in nature, meaning that the components are not uniformly distributed throughout the mixture. This allows for easy separation of the components based on their physical properties.