Question

how do we get a substance back into original farm in the case of reversible change​

Answer 1

Answer :- Simply reversing the temperature returns the substance to its original form. Dissolving and mixing: Mixing salt in water to form a solution. Mixing oil and water.

Answer 2

Answer:

so we can  found that substance does not change the colour and does evoprate the gas there is no change in heat no new substance is formed  than we say that is it  reversible change

Explanation: