Salt: Separating Mixtures

Salt is found in the oceans and Earth's surface. How do we collect this salt and separate it from the materials it is mixed with? Chemistry - Atoms And Bonding - Learning Points. Salt is found in oceans, lakes and underground rock beds. Salt lake water is pumped into ponds and the water evaporates to leave salt. Rock salt is found as a mixture of salt and clay and is then separated. Evaporation and separation allow us to use pure salt on our food. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.