Here we have a mixture of sand and
iron (Fe)
and to get this mixture unmixed
one thing we can use or take
advantage of is the fact that iron is
magnetic. And so I have here a magnet
inside a plastic bag and if i put that
in there we came very quickly pull out
the iron out of the mixture. And then
all we have to do is remove our magnet
from the bag or invert our bag to get the iron
fully separated.
Now certainly at this point there is
some sand still mixed in with the iron
but we could go through a refining process; where
we come in here and repeat the process
trying to, each time, get less and less sand
caught up with our iron bits
and eventually we could get to the point
where we had just iron
in it's own pile and our sand left on its own.
