1. Ways to Separate Mixtures

2. Which Method? There are several ways to separate mixtures.
The physical properties of the mixture will determine which separation method is the best one to use.

3. Sifting
Sifting involves using a sieve or a sifter as a way to separate solids of varying sizes.
Examples include: rocks, gravel, and sand.
Think of another example of a mixture that can be separated by sifting.
Lavendar, M. (Photographer). (2010). US navy n-1120l-012 engineering aide constructionman christopher kumpf, a seabee assigned to naval mobile construction battalion (nmcb) 7., weighs soil samples. [Print Photo]. Retrieved from

4. Magnetic Attraction
Magnets are used to separate magnetic materials such as iron, steel, nickel or cobalt from non-magnetic materials in a mixture.
Examples include: separating iron filings from sand.
Think of another example of a mixture that can be separated by using a magnet.
Yug. (Photographer). (2005). Sand. [Print Photo]. Retrieved from
Sacud. (Designer). (2006). Magnesy. [Web Graphic]. Retrieved from

5. Filtration Filtration removes solids from liquids by using a filter.
Example: a mixture of sand and water
Think of another example of a mixture that can be separated by using a filter.
Venegas, A. (2013). Filter [Artist].

6. Evaporation
Evaporation involves heating a solution until the liquids turn to gases and leave the solids behind.
Example: boiling a solution of water and salt until all that is left are the salt crystals.
Gran. (Photographer). (2009). Boiling water. [Print Photo]. Retrieved from

7. Which Method?
You have been given a mixture of sand, salt, and water. Which method or methods will you use to separate this mixture? Why? + +