How can a mixture of sand and salt be separated?

A mixture of sand and salt can be separated using a combination of dissolution, filtration, and evaporation. This method works because salt is soluble in water, while sand is not.

First, water is added to the mixture. The salt dissolves in the water, but the sand remains undissolved. Next, the mixture is filtered to separate the sand from the salt solution.

Finally, the salt solution is heated to evaporate the water, leaving behind solid salt.

In simple terms, the process involves dissolving the salt, filtering out the sand, and then evaporating the water to recover the salt.