DevEX - reference for building teams, processes, and platforms
Separation techniques by Nikhar, Andrew, Kushal, Tyler, Aaron and Shehan
1.
2. Separation is the action of moving
substances 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.
3. Sieving
Sieving is use to separate small things
from 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
4. 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.
5. 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
6. 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
7. Evaporation
Evaporation, the
process by which a
liquid or a solid
changes into a vapour.
A substance may
evaporate in one of two
ways: by changing into
a vapour at the surface,
as when water
evaporates from an
uncovered dish; or by
boiling.
8. 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