Why does plaster of Paris set to a hard mass after mixing with water and leaving it for sometimes .
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9
Answer:)Plaster of Paris is dry powder (molecules are apart)
2)When water is mixed it becomes hydrated
3)But it absorbs the water over time
4) In the process the water acts as an adhesive and it binds the molecules.(point 1)
5) This results in a hard mass
Explanation:
Answered by
15
Answer:
Due to the following reason s
Explanation:
When plaster of Paris reacted with water it get hydrated and as we know it is a derivative of gypsum so after reacting with water it gains it's half of the water molecule and form gypsum so that because it sets into hard mass. (caso4 + 1/2H2O=CaSO4.2H2O)
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