1. • Sieving
• Filtration
• Decanting
• Floatation
• Evaporation
• Distillation
By Amal, Sara & Veronica

2.  Sieving is a way to separate
substances in a mixture.
Sieving separates big
substances from small
substances. Sieving can also
be used to separate
substances that don’t
dissolve in the liquid. Sieving
only works for separating
insoluble substances from
the other substance. For
example separating big
rocks from small rocks.
Sieving cannot separate
dissolved substances from
the solvent

3.  Filtration is when you
use filter paper to
separate liquids and
solids. Filtering is also
another way to separate
substances in a
mixture. Filtration is
used to separate liquids
and solids that don’t
dissolve in the liquids.

4.  You can use a special
case of sedimentation
in science experiments.
If you let sand settle to
the bottom, then tip
out the clear liquid at
the top, you have
decanted the liquid.
This is an easy
separation. Decanting
means to pour off a
liquid on top to leave
behind the sediment.

5.  Floatation is when
an undissolved
substance floats on
top of another. For
example, oil floats
on top of water and
can be separated
using a separating
funnel.

6. Evaporation is a way to separate water and
salt from saltwater. To separate the salt
from the water you have to use a Bunsen
Burner and boil the water. Eventually all of
the water will evaporate and leave behind
the salt.

7. Evaporating Dish
Tripod
Bunsen Burner

8. Distillation is the process where salt and water
is separated from salt water. In distillation, salt
water is placed in a boiling flask and heated to
the boiling point of water, 100 degrees C. The
water boils, evaporates and becomes steam.
The steam travels along the condenser. The
steam inside the condenser is cooled to below
100 degrees C and condenses to form liquid
water. The condenser is kept cool by running
cold water through its outer jacket.

10. Go to
testmoz.com/74121
to see how much you
remember from the
presentation.