After the group work, later on in term 3, we learnt more about separation techniques. We learnt that there were several separation techniques such as filtration, evaporation to dryness, distillation, magnetic attraction, crystallisation, and chromatography.
It is interesting to find out that different techniques have different applications, they also have different apparutus in the separation process. For instance, crystallisation is used fir production of silcon cafers for microchips, and also production of sucrose sugar from sugar beets. Those sweet delicacies which we enjoy also goes through a separation process before we can eat them.
Next is the chromatography process. Chromatography is the simple process to test for a substances in a dye, etc. I did the simpler process of chromatography which involves using a chromatography paper with a dye, soaked in a solvent, preferably alchohol. The substances in the dye then separates as they have different solubilities. What I like about chromatography is that this simple yet useful application has been helpful to the society as it is used to test for banned substances too. For example, police use urine samples for chromatography so that they can find out if the suspect is taking drugs.
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