Answer:A physical change is required.When you separate the components of a solution (like salt water), you don’t need to change what the substances are, you just need to change their form or state, like turning liquid into gas through evaporation.For example, To get the salt out of the water, you can heat the water until it evaporates. Leaving the salt behind.The water then turns into a vapor (a physical change) but no new substance is formed.