Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Calcite is an ionic salt called calcium carbonate or CaCO3. The chemical formula for chalk is CaCO3 (calcium carbonate) and its molecular weight is 100.0869 amu.
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Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Calcite is an ionic salt called calcium carbonate or CaCO3. The chemical formula for chalk is CaCO3 (calcium carbonate) and its molecular weight is 100.0869 amu.
Chalk---Calcium Carbonate.
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