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Plaster of Paris is a classic exothermic reaction. The gypsum when heated to 150 degrees dehydrates with 75% of water content escaping as vapor. When water is reintroduced it resets the crystal lattice and gives off heat.

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9y ago
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13y ago

When the water is mixed up with the plaster it produces exothermic heat.

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12y ago

yes

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Q: Why does plaster of Paris get hot?
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Why is plaster of Paris called plaster of Paris?

Gypsum plaster (plaster of Paris) ( CaSO4·½H2O ) A large gypsum deposit at Montmartre in Paris led gypsum plaster to be commonly known as "plaster of Paris"


How hot does plaster of Paris get when curing?

SEE:Sculpture Forum: Can plaster of paris be bakedin oven LINK


What are the different types of plaster of Paris?

No, there are not different types of plaster of Paris. However, there are different types of plaster. There is plaster of Paris, pottery plaster, Puritan pottery plaster, Cerami-Cal, and Hydrostone.


What mineral is found in the plaster of Paris?

Abrasives are found in the plaster of Paris.


Can plaster of Paris be used outside?

Not if it will get wet/rained on.Yes, plaster of Paris can be used outside. Plaster of Paris is used in art, architecture and other industries. Plaster of Paris can be used both indoors and outdoors.


How do you make a plaster of Paris mold of a hand?

Do not "stick your hand in a bucket of plaster of Paris" as someone previously suggested!Plaster of Paris can get really hot while setting and you would end up severely burning your hand...A slightly more sensible approach is to make a mould of your hand using something like clay or alginate and then use that mould to create a plaster of Paris duplicate of your hand...


What is the chemical name for plasters of Paris?

2CaSO4.H2O is known as Plaster of Paris.


When was plaster of Paris made?

Plaster of Paris has been used since ancient times.


Does gypsum react the same way as plaster of Paris?

Gypsum and plaster of Paris are synonyms.


When was plaster Paris made?

Plaster of Paris has been used since ancient times.


Is plaster of Paris a compound or a mixture?

Plaster of Paris (gypsum) is calcium sulfate (CaSO4.0,5H2O) - a compound.


Is it possible to use plaster of Paris in making concrete?

No, plaster of paris is not strong enough for concrete.