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Purity (Water treatment (Water purified in plants (Filtration,…
Purity
Water treatment
Surface water
Ground water
Waste water
Water purified in plants
Filtration
Sedimentation
Chlorination
Can distillate sea water
Distillation
Used to separate liquids
You heat a solution to separate them using boiling ppoints
The liquid with the lowest boiling point evaporates
The evaporated mixture is then condensed back into liquid
Pure substances
Contain only one element
Weaker than mixtures
Have low melting points
Filtration
Used to separate insoluble solid from liquid
Filter paper allows liquids to go through
Filter paper dosn’t allow insoluble solids to filter through
Crystallisation
Separates soluble solid from a solution
Heat the solution till the water evaporates
The crystals left are the product
Chromatography
Stationary phase is where nothing moves
Mobile phase
1 draw a base line
2 put mixture to be separated on the line
3 pour solvent into a beaker
4 dip the paper in the solvent
5 put a watch glass over the top of the beaker
6 this will stop the solvent from evaporating
7 the solvent will start to move up the paper
8 when the chemicals dissolve in the solvent they will also move up the paper
9 different chemicals will move different distances
10 mark the distance the solvent has used