Question

change? Give examples to explain the difference between changes that can or cannot be reversed. maste of Plaster of Paris (POP) is applied over the bandage​

Answer 1

ANSWER IS THIS

1. A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised.
2. No, the change in plaster of Paris cannot be reversed. When water is added to POP, it undergoes a chemical change.