Calcium carbonate - Wikipedia
Calcium carbonate shares the typical properties of other carbonates. Notably it • reacts with acids, releasing carbonic acid which quickly disintegrates into carbon dioxide and water:• releases carbon dioxide upon heating, called a thermal decomposition reaction, or calcination (to above 840 °C in the case of CaCO3), to form calcium oxide, CaO, commonly called quicklime, with reaction enthalpy 178 kJ/mol: