Separate Salt And Sand

Needed:

  • Salt
  • Sand
  • Water
  • A cooking vessel
  • A stove or hot plate
Experiment:
Measure equal amounts of salt and sand and then mix them thoroughly. Place the mixture in a pan and add water. Heat the water until all the salt dissolves. Allow the sand to settle to the bottom of the pan and then pour off the salty water. Remove the sand from the pan and put the salty water back in. Boil the water away, leaving only salt in the bottom of the pan.

Explanation:
The sand does not dissolve in the water as the salt does. The salt does not boil away as the water does. Will this work with a mixture of sugar and sand? What about sugar and salt?