What happens when plaster of Paris mix with water?

Answer 1

Plaster of Paris is formed from gypsum. The gypsum is heated to 150 decrees Celsius and becomes a dry powder. When this powder is mixed with water it re-forms into a paste and eventually hardens into a solid. The powder mixed with water is held together by hydrogen bonds in the water molecules. This is a week bond that is easily broken. When Plaster of Paris and water are mixed together they undergo a chemical change. The particles rearrange to make a completely new substance. When plaster of Paris and water are mixed together the mixture becomes warm releasing energy in the form of heat therefore undergoing a chemical change.

Answer 2

Plaster Of Paris is a white powder and on mixing water with it ; it into gypsum , giving a hard solid mass.

Caso4. 1/2 H2O+ 1 1/2 H2O -------> CaSO4.2H2O

(Plaster Of Paris) ( Gypsum)

Answer 3

Plaster of Paris is mainly made up of CaSO4. 1/2 H2O. There are various crystal forms of this and commercial plaster of paris is a mixture not a pure substance. The hemihydrate formed by heating gypsum, CaSO4.2H2O. Adding water to the hemihydrate causes the formation of the dihydrate. What is this sort of reaction called? It may be called hydration.

Answer 4

they turn yellow, like pee, then it slowly turns white and forms a smaller glob like substance which is known as the life cycle

Answer 5

Plaster of Paris is created by heating gypsum to about 150 °C.

When the dry plaster powder is mixed with water, it re-forms into gypsum.

Answer 6

i have no idea :D