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Last updated date: 03rd Dec 2023
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MVSAT Dec 2023

What is the common property between salt and sand?

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Hint:Salt is slightly lighter than sand. If you shake a pan containing both salt and sand, the salt will rise to the top. Sand does not dissolve in water and is insoluble in water. We can easily separate sand and water by filtering the mixture. Salt can be separated from a solution by evaporation.

Complete answer:
Salt is a non-magnetic solid and is soluble in water. Sand is a non-magnetic solid and is insoluble in water. The easiest method to separate sand and salt is to dissolve salt in water, pour the liquid away from sand, and evaporate the water to get the salt. Another method for the physical separation of salt and salt is based on the different densities of salt and sand. The density of salt is less than the density of sand. That means sand is slightly heavier than salt. Another method to separate salt and sand is based on solubility. If a substance is soluble, it means that it dissolves in a solvent. Salt is an ionic compound that is soluble in water but sand is not soluble in water.
Therefore, the common properties between salt and sand: both have mass and are in solid state.

Another method to separate the components of a mixture of salt and sand is based on melting point. The melting point of salt is less than that of sand. So, salt becomes molten at a lower temperature than sand. The molten salt can be collected leaving the sand behind. This is not the most practical method of separation because both temperatures are very high.