Formula: CaCO3
Molecular weight: 100.09amu
Melting point: 825°C
Boiling point: Decomposes as 899°C
State at room temperature: Solid
Molecular Geometry: Tetrahedron
Molecular or Ionic?: Ionic compound
Uses: Most commonly used as a calcium supplement (vitamin) or as an antacid
Bond Description:
Calcium Carbonate is a chemical compound, with a formula CaCO3. It is a common found rock all around the world which is the main component in the following substances:
• Shells
• Marine Organisms
• Snails
• Egg Shells
Also calcium carbonate is the active ingredient in a substance called agricultural lime which is the principle cause of “hard water”. And is most commonly used as a calcium supplement or as an antacid.
Other Information:
Calcium carbonate is found naturally as the following minerals and rocks:
• Aragonite
• Calcite
• Vaterite or (μ-CaCO3)
• Chalk
• Limestone
• Marble
• Travertine
To test whether a mineral or rock contains calcium carbonate, strong acids, such as hydrochloric acid, can be added to it. If the sample does contain calcium carbonate, it will fizz and produce carbon dioxide and water. Weak acids such as acetic acid will react, albeit less vigorously. All of the rocks/minerals mentioned above will react with acid.
