The process of evaporation separates a solution of a solid dissolved in a liquid, only collecting the solid. During evaporation, the solution is boiled allowing the liquid to vaporize into the air. The solute is left behind in the container.
Evaporation happens quickly and if all the liquid evaporates the solid that remains lack any crystalline structure. This method is not suitable if the solid to be collected is decomposed by heat.
Evaporation is useful to obtain the sodium chloride from a sodium chloride solution.