Page 2 - LN
P. 2

5.  Magnetic separation:When one substance in the mixture has some magnetic
                       properties then this method is quite useful. Strong magnets are commonly used
                       to separate magnetic elements.









                   6.  Evaporation:Evaporation is a process which is used to separate a solid
                       substance dissolved in liquid. It is based on the fact that liquids vaporize easily
                       whereas solids do not.












               Applications of Evaporation:
              Obtaining salt from see water.
               7. Centrifugation:
               It is a method of separating the suspended particles of a substance from a liquid in
               which the mixture is rotated at high speed in a centrifuge.This method is useful in case
               the suspended particles in a liquid are too small too be retained by filter paper.















               Principle of Centrifugation:
               When a mixture is rotated very fast, the denser particles are forced to go to the bottom
               of the centrifuge and the lighter particles stay at the top.
               Applications of Centrifugation:


              Used in dairies to separate cream from milk.
              Used in washing machines to squeeze out water from wet clothes.
   1   2