• HOMEWORK: Methods of Separating Mixtures • First: Read Chapter 3 sections 3 and 4 (Mixtures of Matter and Elements and Compounds). • Second: Read this file. • Third: Exemplify the use of methods of separating mixtures in: recycling processes, purification of water, air and solids. Before writing your examples, do research and cite your sources. • DUE DATE: Wednesday 24 th , 2011
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• HOMEWORK: Methods of Separating Mixtures
• First: Read Chapter 3 sections 3 and 4 (Mixtures of Matter and Elements and Compounds). • Second: Read this file. • Third: Exemplify the use of methods of
separating mixtures in: recycling processes, purification of water, air and solids. Before writing your examples, do research and cite your sources. • DUE DATE: Wednesday 24th, 2011
METHODS OF SEPARATING MIXTURES
August 21st, 2011
Methods of separating mixtures
• Filtration • Decantation • Distillation • Paper chromatography • Centrifugation • Magnetization
Filtration
• Separates a solid from a fluid (liquid or gas) • Uses a porous barrier: filter paper • Use gravity or gravity enhanced by a vacuum.
Decantation
• Used to separate immiscible liquids • Done by carefully pouring one of the
solutions into another container • Used to separate insoluble solids
Distillation
• Mostly used for homogeneous mixtures • Separates substances by their boiling points • Condense the gas into a liquid and collect
Paper Chromatography
• Composed of a mobile phase and a stationary phase • Mobile phase: usually a gas or a liquid that
travels through the stationary phase • Stationary phase: chromatography paper
Centrifugation
• Uses the centrifugal force in order to sediment compounds in a mixture.
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