Methods to Separate 2 Substances:
Separating two substances involves isolating one substance from another in a mixture. There are several methods to achieve this depending on the physical and chemical properties of the substances. Here are some commonly used methods:

1. Filtration:
- Filtration is a method used to separate solid particles from a liquid or gas by passing it through a filter medium. The solid particles are retained on the filter while the liquid or gas passes through.

2. Distillation:
- Distillation is a process that separates liquids based on differences in their boiling points. The mixture is heated to vaporize the more volatile component, which is then condensed back into a liquid form.

3. Extraction:
- Extraction involves using a solvent to selectively dissolve one component of a mixture. The solvent is then separated from the mixture, leaving behind the dissolved component.

4. Chromatography:
- Chromatography is a technique used to separate and analyze complex mixtures based on differences in the distribution of components between a stationary phase and a mobile phase.

5. Evaporation:
- Evaporation is a method used to separate a solute from a solvent by heating the mixture to evaporate the solvent, leaving behind the solute.

6. Centrifugation:
- Centrifugation is a process that uses centrifugal force to separate particles of different densities in a liquid mixture.
These methods are widely used in various fields such as chemistry, biology, and environmental science to separate and purify substances for further analysis or use. Each method has its own advantages and limitations, so it is important to choose the most suitable method based on the properties of the substances being separated.