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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. Can the change in POP be reversed?

Simran Bhatia , 11 Years ago

Grade 11

9 Answers

Aditi Chauhan

Last Activity: 11 Years ago

When water is added to plaster of Paris (POP), it changes to another substance and on drying it hardens. Once the POP has hardened, its shape cannot be changed. Therefore, the change in POP cannot be reversed.

Adarsh

Last Activity: 10 Years ago

This is an example of chemical change which cannot be reversed by using simple physical means. However, this change can be reversed using some chemical means.

Arya

Last Activity: 7 Years ago

No, the change in the POP cannot be reverse.it is a chemical change and it can not be reversed because after it became hard it became a solid

Sarvesh

Last Activity: 7 Years ago

This is an example of chemical change. It can't be reversed using physical means. You have to either heat the plaster or do some other complex processes.

Scholr Boy

Last Activity: 6 Years ago

2CaSO4.H2O + 3H2O = 2CaSO4.2H2O

This is a irreversible chemical change. Hence POP cannot be reverted back after it becomes hard

Pavitra

Last Activity: 6 Years ago

A news for you about the structure of the earth hatts off to magellon to find the earth is round after a great struggle he has found

Adi

Last Activity: 6 Years ago

No, the change cannot be reversed pop has a property of setting into a hard masses on wetting with water due to the formation of a new compound called gypsum . once the pop is hardened, it cannot be reversed back to pop .tense ,it is an in reversible change

Aditya kakkar

Last Activity: 6 Years ago

NO, THE CHANGE IN P.O.P CANNOT BE REVERSED AS IT BECOME HARD ON DRYING AND A NEW SUBSTANCE IS FORMED WHICH CANNOT BE REVERSED BACK IN IT'S ORIGINAL FORM.THEREFORE, CHANGE IN THE P.O.P CANNOT BE REVERSED AND IT IS A CHEMICAL CHANGE.

Arun

Last Activity: 5 Years ago

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. ... No, the change in plaster of Paris cannot be reversed. When water is added to POP, it undergoes a chemical change