Question

what is gypsum? what happened if it is heated up to 100c

Answer 1

A soft white or grey mineral consisting of hydrated calcium sulphate. It occurs chiefly in sedimentary deposits and is used to make plaster of Paris and fertilizers, and in the building industry.
When heated to that temperature it turns into Plaster of Paris
Hope it helps you.

Answer 2

Hey frnd here is you answer:
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.[3] It is widely mined and is used as a fertilizer, and as the main constituent in many forms of plaster, blackboard chalk and wallboard.

When gypsum is heated To 1000C it turns into Plaster of paris.

The reaction is as follows:

CaSO4.2H2O -Heated (373 K)-------- CaSO4.1/2 H2O

(Gypsum) ( Powdered POP)