Question

What is gypsum what happens when gypsum is heated to 100 degree C (373 K)

Answer 1

when gypsum is heated to 100C it turns in toplaster of paris.
the reaction :
CaSO4.2H2O-----------CaSO4.  1/2H2O
Gypsum               Powdered POP

Answer 2

Explanation:

Gypsum is defined as a soft mineral which is made up of calcium sulfate dihydrate. Chemical formula of gypsum is $CaSO_{4}.2H_{2}O$.

When gypsum is heated to 100 degree Celsius (373 K) then it gets converted into plaster of paris.

Chemical formula of plaster of paris is $CaSO_{4}.\frac{1}{2}H_{2}O$.