Lime or Limestone.
Calcium bicarbonate, also called calcium hydrogen carbonate, has a chemical formula Ca(HCO 3) 2. The term does not refer to a known solid compound; it exists only in aqueous solution containing the calcium (Ca 2+), bicarbonate (HCO 3 −), and carbonate (CO 3 2−) ions, together with dissolved carbon dioxide (CO 2). Attempts to prepare compounds such as calcium bicarbonate by evaporating its solution to dryness invariably yield the solid calcium carbonate instead: Ca(HCO 3) 2 (aq) → CO 2 (g) + H 2 O(l) + CaCO3 (s). Calcium carbonate is a chemical compound with the formula Ca C O 3. It is formed by three main elements: carbon, oxygen and calcium. It is a common substance found in rocks in all parts of the world, and is the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells. Calcium carbonate will react with water that is saturated with carbon dioxide to form the soluble calcium bicarbonate. Making the world better, one answer at a time. Calcium carbonate found in nature is a mineral called calcite, but we commonly call it 'Lime' or 'limestone.' Calcium carbonate (CaCO3) can take different forms: chalk and marble are both versions of the same compound, albeit in varying molecular structures. The common name for sodium carbonate is 'washing soda'. + 3 others found this useful. Cheryl Hamby. Edit. Share to: 1  An Introduction to the Geological Principles of Limestone Rock Limestone rock serves many purposes in the field of geology. Calcium carbonate is the active ingredient in agricultural lime, and is created when calcium ions in hard water react with carbonate ions creating limescale. It is commonly used medicinally as a calcium supplement or as an antacid, but excessive consumption can be hazardous. Calcium carbonate will react with water that is saturated with carbon dioxide to form the soluble calcium bicarbonate. Calcium can be alloyed with aluminum, beryllium, copper, lead and magnesium. Calcium is also used in vacuum tubes as a getter, a material that combines with and removes trace gases from vacuum tubes. Calcium carbonate (CaCO 3) is one of the common compounds of calcium. It is heated to form quicklime (CaO) which is then added to water (H 2 O). This forms another material known as slaked lime (Ca(OH) 2) which is an inexpensive base material used throughout the chemical industry. Although calcium is the fifth most abundant element in the earth's crust, it is never found free in nature since it easily forms compounds by reacting with oxygen and water. Metallic calcium was first isolated by Sir Humphry Davy in 1808 through the electrolysis of a mixture of lime (CaO) and mercuric oxide (HgO). Other common compounds of calcium include: calcium sulfate (CaSO 4), also known as gypsum, which is used to make dry wall and plaster of Paris, calcium nitrate (Ca(NO 3) 2), a naturally occurring fertilizer and calcium phosphate (Ca 3 (PO 4) 2), the main material found in bones and teeth. Although calcium is the fifth most abundant element in the earth's crust, it is never found free in nature since it easily forms compounds by reacting with oxygen and water. Metallic calcium was first isolated by Sir Humphry Davy in 1808 through the electrolysis of a mixture of lime (CaO) and mercuric oxide (HgO). Calcium carbonate is an important chemical compound made up of one atom of calcium bonded to one atom of carbon and three atoms of oxygen. Its molecular formula is CaCO 3. 
https://en.wikipedia.org/wiki/Calcium_bicarbonate https://en.wikipedia.org/wiki/Calcium_carbonate http://www.answers.com/Q/What_is_the_common_name_for_calcium_carbonate https://en.wikipedia.org/wiki/Calcium_carbonate http://education.jlab.org/itselemental/ele020.html http://education.jlab.org/itselemental/ele020.html http://www.wisegeek.org/what-is-calcium-carbonate.htm
calcium carbonate common name