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Chapter 4: Exploring Diversity Of Matter Using Separation Techniques…
Chapter 4: Exploring Diversity Of Matter Using Separation Techniques
Magnetic Attraction
It is used to separate magnetic materials from non-magnetic materials
Example: Salvaging of iron and steel, Food processing
Separating Mixtures
Techniques
Filtration
Distillation
Magnetic attraction
Evaporation
Paper chromatography
Evaporation
It is the technique used to separate dissolved solids from a solid-liquid mixture
Obtaining drinking water from used water
Drinking water is obtained from treated used water in two stages:
Microfiltration
Mircrofiltration is first carried out on treated used water to remove small particles from water.
Reverse Osmosis
Reverse Osmosis is carried out on treated used water to remove:
Disease-causing micro-organisms;
Dissolved salts;
Chemical molecules from water.
Paper Chromatography
Paper chromatography is the technique used to separate small amounts of substances from mixtures based on the different solubilites of the components in a particular solvent.
Applications of paper chromatography
Identify the contents of a mixture
Test the purity of a substance
Distillation
Main processes
vaporisation
condensation
Distillation is the technique used to separate a pure liquid from a solid-liquid or a liquid-liquid mixture.
Filtration
It is the technique used to separate an insoluble solid from the liquid-solid mixture