Question

A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. What are the changes the occurred to the cement? Do you think the changes can be reversed? Explain.

Answer 1

The next day, the sun shines brightly. Do you think the changes which have occurred in the cement, could be reversed? Answer: No, the changes which have occurred in the cement cannot be reversed because it is a irreversible chemical change.