Ways to Separate Mixtures

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Presentation transcript:

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 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 100315-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 http://commons.wikimedia.org/wiki/File:US_Navy_100315-N-1120L-012_Engineering_Aide_Constructionman_Christopher_Kumpf,_a_Seabee_assigned_to_Naval_Mobile_Construction_Battalion_(NMCB)_7.,_weighs_soil_samples.jpg

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 http://commons.wikimedia.org/wiki/File:Sand.jpg Sacud. (Designer). (2006). Magnesy. [Web Graphic]. Retrieved from http://commons.wikimedia.org/wiki/File:Magnesy.jpg

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].

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 http://commons.wikimedia.org/wiki/File:Boiling_water.jpg

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? + +