Ways to Separate Mixtures

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.

Sifting Uses sieves or sifters as a way to separate solids of varying sizes Examples: sorting rocks, gravel, and sand Think of another example of a mixture that can be separated by sifting.

Magnetic Attraction Separates magnetic materials, such as iron, steel, nickel or cobalt, from non-magnetic materials in a mixture Example: separating iron filings from sand Think of another example of a mixture that can be separated by using a magnet.

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.

Evaporation Heat solution until liquids turn to gas, and leave the solids behind. Example: boiling a water and salt solution until all that is left are the salt crystals

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? + +

Separating Mixtures Activity

Mixtures Card Sort Activity