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calcium carbonate

n. (context inorganic compound English) A colourless or white inorganic compound, CaCO3, occurring as chalk, limestone, marble etc; reacts with acids to liberate carbon dioxide.

calcium carbonate

n. a salt found in nature as chalk or calcite or aragonite or limestone

Calcium carbonate

Calcium carbonate is a chemical compound with the formula Ca C O. It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone) and is the main component of pearls and the shells of marine organisms, snails, and eggs. Calcium carbonate is the active ingredient in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale. It is medicinally used as a calcium supplement or as an antacid, but excessive consumption can be hazardous.

Usage examples of "calcium carbonate".

The marl dating from the diluvian times, when the ground moraines formed, contains, as we know, calcium carbonate.

The infamous red mud is heated with limestone (calcium carbonate) and soda to regenerate sodium aluminate, and the solution is fed back into the Bayer process.

Karst is a topography created through the chemical weathering of limestone geology containing at least eighty percent calcium carbonate.

Usually, the silica is from sand (or quartz pebbles), the sodium oxide is formed from sodium carbonate (soda ash), and the calcium oxide is derived from calcium carbonate (limestone).

Each drip of calcareous water, even the tiniest droplet of moisture in Ae air, was saturated with calcium carbonate m j solution, which was redeposited inside the cave.

So, using calcium carbonate as a base, he manufactured a pill containing exactly this quantity of the magic substance.

The acid in the vinegar reacts with the calcium carbonate of the eggshell.

In this reaction, the solid calcium carbonate crystals break apart to form calcium ions that float free in the liquid and carbon dioxide, which makes the bubbles that you see.

Limestone: a sedimentary rock composed of calcium carbonate, a sort of blend of crystalline calcite and carbonate mud, produced by lime-secreting organisms from ancient coral reefs.

The cross was encrusted in caliche, a hard crust of calcium carbonate.

Then, as now, the plankton created their shells by drawing oxygen from the atmosphere and combining it with other elements (carbon especially) to form durable compounds such as calcium carbonate.