Separation techniques are very useful to separate substances from each other. Physical techniques such as distillation,filtration,evaperation and crystallisation can seperate mixtures. And chemical techniques can seperate compounds, which are two elements bonded together with heat or light energy.
Distillation is a process whereby the mixture, which contains liquid substances with different boiling points, is heated at its different boiling points, where the liquid with the lowest boing point would evaperate. The liquid would then condense on the condenser and slide down into a beaker.
Filtration can seperate a solid from a liquid. Firstly, you place the mixture into a funnel with the filteer paper. As time pass, the liquid would filter through the funnel a drip into a beaker. This is how to seperate a solid and a liquid(fluid)
Evaperation is a process whereby the mixture(solution) is heated until dryness. Usually, a hot water bath would be used as to have a smooth boiling. The final product would be the solute, which in a salt solution, would be salt. This process can only work for solution where the solute will not decompose.
For such situations, the process crystallsation would be used. This process is alike to evaperation to dryness, just that before the solution is completely evaperated, the solution would be allowed to cool. Thus, the solute would not decompose.
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