Evaporation and filtering are both methods used to separate substances, but they work differently and are used for different types of mixtures:
1. Evaporation:
- Process:
This involves heating a liquid until it turns into vapor, leaving behind any dissolved solids.
- Use:
It's typically used to separate a dissolved solid from a liquid. For example, getting salt from saltwater.
- Example:
Boiling water to leave behind salt crystals.
2. Filtering:
- Process:
This involves passing a mixture through a filter (like paper or mesh) to separate solids from liquids or gases.
- Use:
It's used to separate an insoluble solid from a liquid or gas.
- Example:
Using a coffee filter to separate coffee grounds from liquid coffee.
In short, evaporation separates based on differences in boiling points, while filtering separates based on particle size.