What is the chemical formula for calcium carbonate?

The chemical formula for calcium carbonate is CaCO3. This compound consists of one calcium (Ca) atom, one carbon (C) atom, and three oxygen (O) atoms, which combines to form a carbonate ion. Calcium carbonate is widely known for its presence in rocks, as well as in biological systems where it is found in bones and shells. Its structure indicates that it is a salt formed from calcium and the carbonate ion (CO3)2-, which is significant in various applications such as in the construction industry, as a dietary supplement, and in environmental contexts like water treatment. The clarity of the formula reflects the stoichiometry of the constituent elements, demonstrating the compound's balanced charge and overall stability. This understanding of the components enhances insight into its chemical behavior and significance.