Separation techniques by Nikhar, Andrew, Kushal, Tyler, Aaron and Shehan
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  • 1. Separation is the action of movingsubstances in mixtures apart like salt from water in a saltwater. There are a number of ways to separate mixtures. For example, sieving, made to separate big insoluble substances, evaporation and distillation, which separate solutes from solutions like salt from water, and lots more.
  • 2. Sieving Sieving is use to separate small thingsfrom big things. A good example when to use a sieve, is when you pour dirty water into it and clean water comes out. This happens because in the dirty bit in the water gets caught by the sieve
  • 3. Filtration  Filtration is when you filtrate dirty water, basically you can use a filter paper and pour dirty water into it. The filter paper traps the small particles and lets the water go through as the filtrate.
  • 4. Decanting  Decanting means to pour off a liquid without disturbing the sediment. The sediment is the matter that settles to the bottom of a liquid A good example of decanting is to fill a beaker with sand and water and then wait for the sand (sediment) to sink to the bottom then slowly tip out the water leaving behind only the sand
  • 5. Floatation  Floatation is a technique that is used to separate a substance with a lower density to that of the other substance. By doing this one the substance with the lower density will rise to the top making it easier to separate them A good example is oil and water separated using a separating funnel. Pouring the mixture in, once it has settled, it can easily be separated by letting all the water out the bottom, leaving behind the oil in the separating funnel
  • 6. Evaporation  Evaporation, the process by which a liquid or a solidchanges into a vapour. A substance mayevaporate in one of twoways: by changing intoa vapour at the surface, as when water evaporates from an uncovered dish; or by boiling.
  • 7. Distillation Definition: Distillation is the technique of heating a liquid to create a vapour which is collected when cooled separate from the original liquid Examples: Pure water can be separated from salt water through distillation. Salt water is boiled to create steam. The steam is collected and allowed to cool back into salt-free water
  • 8. The END!!! 