1 Crush some rock salt using the mortar and pestle. 2 Put the crushed rock salt into a beaker and add some water. Stir the mixture. 3 Carefully filter the mixture.

Rock salt is often used as a gritting salt both residentially and municipally for managing ice and to a lesser extent snow. It can help to stop snow settling but is better used after snow has been cleared to prevent paths, roads, driveways and steps icing over.

For example, water can be separated from salt solution by simple distillation. This method works because water has a much lower boiling point than salt. When the solution is heated, the water evaporates. It is then cooled and condensed into a separate container.

Saltwater is a homogeneous mixture, or a solution. Soil is composed of small pieces of a variety of materials, so it is a heterogeneous mixture. Water is a substance; more specifically, because water is composed of hydrogen and oxygen, it is a compound.

Iron is magnetic and the other two not, which means a magnet could be used to attract the iron filings out of the mixture, leaving the salt and sand. Salt is water soluble, while sand is not. This means the two can be mixed in water and stirred. The salt will dissolve and the sand will not.

1) Pour the mixture in a container having water and stir well. The salt will dissolve in it. 2) Now pass the mixture (aqueous) into another container using a sieve. The sand and the solution will pass through sieve and the pebbles will get separated out.

A paper filter is the best tool to separate a mixture of water and particulates that do not dissolve and are too small to be separated by a screen.

What happened to the sand and pebbles after mixing them together in the small. The sand can still be identified from the pebbles. The sand separates from the pebbles. The sand is absorbed by the pebbles.

Pebbles are bigger in size and sand particles are small in size. Thus pebbles can be easily separated from sand particles by using handpicking.