One of the main ingredients in cooking food is salt. Salt serves as important element in our planet because of its many uses. We often see the crystal white color that adds savor to our everyday meal. The salt is also used as component of other products sold in the market. But, have you ever wonder how salt is made? In this module we are going to learn about evaporation process and its examples.
Evaporation is a process of separating mixtures which involves heating the solution until the solvent evaporates leaving behind the solid residue. Heat being the main component in this process separates the mixtures of solid from a liquid. As liquid goes in the air in a form of gas when heated, changing liquid to gas as an example of physical change. Some examples of evaporation are boiling water, drying clothes, and drying of wet roads after heavy rain.