ANSWERS: 1
  • Not exactly, though they are similar. "Chalk (pronounced /ˈtʃɔːk/) is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. It forms under relatively deep marine conditions from the gradual accumulation of minute calcite plates (coccoliths) shed from micro-organisms called coccolithophores. It is common to find flint and chert nodules embedded in chalk." http://www.drugdigest.org/DD/DVH/Uses/0,3915,98%7CTums,00.html "CALCIUM CARBONATE (Titralac®, Tums®) is an antacid that neutralizes or reduces stomach acids. It relieves symptoms in patients with indigestion and heartburn. Calcium carbonate also can be used to prevent stomach bleeding in hospitalized patients or as a dietary calcium supplement. Generic calcium carbonate tablets are available." http://www.drugdigest.org/DD/DVH/Uses/0,3915,98%7CTums,00.html

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