Although chalk is commonly used to create adorable drawings on driveways and sidewalks, there are 18 other ways you can ...

Together, they make the substance, calcium phosphate. Sidewalk chalk is made from calcium and sulfate, which makes calcium sulfate. One of the most common chemicals connected to calcium is called ...

Writing in the journal Advanced Materials, scientists from The University of Manchester and The University of Leeds report that they have successfully reinforced calcium carbonate, or chalk, with ...

Chalk paint creates a soft ... like plaster of Paris or baking soda.” Calcium carbonate is mostly known as a dietary supplement used to treat upset stomachs and heartburn.