1a. An insoluble solid can be easily separated from a liquid by
.
1b. The solids in a salt solution can be separated by heating to cause
of the solvent.
1c. The substance
is soluble in water but
will not dissolve in water.
2a. A pure sample of rock salt can be made by first dissolving it in warm water.
2b. Any
materials can filtered off using a funnel and
.
2c. The
that passes through the filter paper is carefully heated to evaporate the water.
2d. This allows the salt
to form.
3a. Different colours can be separated using the method of
.
3b. The pictures on the left show the separation of a mixture, spot number
and it is compared with five other numbered coloured spots.
3c. From left to right, the mixture contains 1,
and
BUT does NOT contain
and
.