What Is Chalk Made of?

Answer

Chalk is a type of sedimentary rock composed of mineral calcite. It is a type of limestone and is commonly to write with on a blackboard. It is also commonly used for drawing by children or artists.
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2 Additional Answers
Chalk is usually made of calcium carbonate or calcium sulfate. Before it can be used, though, it must be treated to cut down the dust it produces (and in some cases, give it a different color). You can find more information here: http://www.enotes.com/how-products-encyclopedia/chalk
Natural chalk is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. Modern blackboard chalk is generally made from the mineral gypsum (calcium sulfate), usually in sticks of compressed powder.
Q&A Related to "What Is Chalk Made of?"
Calk that kids use in drawing on sidewalks or driveways is made from a soft white porous form of limestone that is composed of calcite. The pastel chalks the kids use are made from
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Either calcium sulfate (from gypsum) or calcium carbonate (from limestone) is mixed with water and pigment, extruded into sticks and then baked.
http://www.ehow.com/how_5852741_chalk-vs_-dry_eras...
crushed limestone then it is pressurized so that it for like a solid rock but is not as rigid as a rock because you can write with it on a blackboard.
http://wiki.answers.com/Q/What_is_chalk_made_out_o...
Sidewalk chalk is made from Plaster of Paris, water and coloring from powdered
http://www.chacha.com/question/what-is-sidewalk-ch...
Explore this Topic
Chalk is made from primary calcium carbonate which is a form of limestone. Other main components of chalk are gypsum, silica, phosphorus, iron, alumina, phosphorus ...
Chalk is commonly made from calcium carbonate. It can also be extracted from natural limestone composed of calcite. Chalk is used in the form of slender sticks ...
Chalk is a soft, white powdery substance made of limestone. Limestone is found in sea and fresh-water sediments and it made mostly of calcite. ...
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