Separation
Separation Methods
Paper chromatography
Uses of paper chromatography:
-To find the dyes used in ink
-To find the dyes used in food
Paper chromatography is used to
separate small amounts of mixtures.
Magnetic Attraction
Uses of magnetic attraction:
-Food processing
-To salvage scrap iron and
steel
Magnetic attraction can be used to separate
magnetic materials from those that are not
attracted by a magnet.
Filtration
The insoluble solid is called the residue
and the liquid that passed throught the filter
paper is called the filtrate
Uses of Filtration
-Vacuum cleaners
-Coffee Makers
Filtration can be used to separate an
insoluble solid from the liquid in a
liquid-solid mixture
Evaporation
Uses of evaporation
-to get salt from seawater
The solid left behind as the residue
Evaporation is used to separate a dissolved
solid from a liquid. The dissoled solid must
be stable to heat and not decompose.
Reverse Osmosis
In reverse osmosis, sea water is pre-treated
to remove debris and contaminants
Fractional Distillation
Uses of fractional distillation:
-To separate crude oil
Fractional distillation is used to separate
more than two liquids in a mixture of
miscible liquids.
Distillation
Uses of distillation
-To make perfumes
-Desalination plants
Distillation is used to separate a pure
liquid from a solid-liquid or liquid-liquid mixture
