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What type of limestone is used in classrooms?
The sedimentary rock, chalk, a form of limestone, was used in the past as a writing instrument on slate blackboards, but most 'chalk' today is actually gypsum.
What are the raw materials in crayons?
Chalk, the stuff associated with blackboards, is made of gypsum. Gypsum is a naturally occurring mineral and is calcium sulfate. http://en.wikipedia.org/wiki/Chalk
What can use for a making a chalk?
If you mean blackboard chalk, it is generally made of the mineral gypsum, which is calcium sulfate.
What is selenite used for?
The major use of selenite gypsum is in the production of plaster and wallboard. Selenite is also used to make 'chalk', and as a setting agent in cement and concrete.
What element is in blackboard chalk dust?
Chalk is comprised of calcium sulfate. Specifically, it comes in the form CaSO4.2H2O, which is the dihydrate often known as gypsum.
What is an example of a gypsum?
Rock gypsum is a sedimentary rock. These rocks can be transparent or opaque. Examples could be chalk and chalk boards.
What is gypsum an example of?
Rock gypsum is a sedimentary rock. These rocks can be transparent or opaque. Examples could be chalk and chalk boards.
What is an example gypsum?
Rock gypsum is a sedimentary rock. These rocks can be transparent or opaque. Examples could be chalk and chalk boards.
What is the composition of chalk?
gypsum CaSO4
Is gypsum board a metal?
No, gypsum board is made from gypsum plaster and paper. Gypsum is a material very similar to school board chalk.
What type of limestone is used in classrooms?
The sedimentary rock, chalk, a form of limestone, was used in the past as a writing instrument on slate blackboards, but most 'chalk' today is actually gypsum.
Is the chalk you find in nature the same as the chalk that you use on the board?
Nature's chalk is limestone--hard. Blackboard chalk is soft--gypsum.
What is Crayola's source for the calcium carbonate for their chalk?
It's most likely that the calcium carbonate in chalk is actually gypsum.
What are the raw materials in crayons?
Chalk, the stuff associated with blackboards, is made of gypsum. Gypsum is a naturally occurring mineral and is calcium sulfate. http://en.wikipedia.org/wiki/Chalk
What can use for a making a chalk?
If you mean blackboard chalk, it is generally made of the mineral gypsum, which is calcium sulfate.
What is selenite used for?
The major use of selenite gypsum is in the production of plaster and wallboard. Selenite is also used to make 'chalk', and as a setting agent in cement and concrete.
What is another name of gypsum?
It is aslo known as "chalk", "plaster" or "plaster of Paris"
