A good way to do this would be to boil the
water. When salty water boils only the pure
water will turn into steam, but the salt will be
You could do this with a test tube of
sea water. Put a little sea water in the test tube
and seal with a stopper, but use a stopper which
has a hole in it to connect a length of tubing.
You can put the other end of the tubing loosely in
another test tube. Now boil the water in the
1st test tube using a bunsen burner. The
sea water will boil and turn into steam. Hot steam
rises and will rush into the tubing. As the steam
moves along the tubing it will cool and turn back
into water (condense) This clean condensed water
can then be collected in the second test tube.
When all the sea water has boiled away you
should notice that the salt is left behind.
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