ACKNOWLEDGEMENT:
Figure
|
Source of Figure
|
Figure 5
|
www.memrise.com495
|
Figure 6a
|
en.wikipedia.org
|
Figure 6b
|
seplessons.ucsf.edu
|
Technique 2: Decanting
Separating a mixture
of an insoluble solid in a liquid:
In this process, the
undissolved solid is left to settle at the bottom of the beaker. Once, the
solid has settled, the liquid is carefully poured in a separate container. The
solid is washed with water and dried. This is a crude method of separation and
is not used where accuracy/precision is important.
Example of this type of mixture: Sand in water
Figure 5:
Technique 3: Centrifuging
Centrifuging is
applied to separate suspended insoluble solid particles from a liquid. In this
technique, a sample of the mixture is in a test tube is placed in a centrifuge
and the test tube is spun at a high speed. This causes the suspended particles
to cling to one another, lose their suspension and separate out of the liquid.
The test tube is left to stand until the solid particles settle at the bottom
of the test tube. The liquid is then decanted off in a separate container.
Figure 6a: Centrifuge
machine
Figure 6b: Centrifuged
sample of blood
