Calcium

Calcium is the chemical element with symbol Ca and atomic number 20. Calcium is a soft gray alkaline earth metal, and is the fifth-most-abundant element by mass in the Earth's crust. Calcium is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.

Calcium is essential for living organisms, in particular in cell physiology, where movement of the calcium ion Ca2+ into and out of the cytoplasm functions as a signal for many cellular processes. As a major material used in mineralization of bone, teeth and shells, calcium is the most abundant metal by mass in many animals.

Read more about CalciumNotable Characteristics, Compounds, Isotopes, Geochemical Cycling, History, Occurrence, Applications, Nutrition, Hazards and Toxicity

Other articles related to "calcium":

Calcium Bromide
... Calcium bromide is the calcium salt of hydrobromic acid with the chemical formula of CaBr2 ...
Remineralisation Of Teeth - See Also
... Dentistry portal Amorphous calcium phosphate Calcium lactate Calcium phosphate NovaMin Recaldent Tooth development Toothpaste Tooth enamel ...
Calcium Bromide - Synthesis, Structure, and Reactions
... It is produced by the reaction of calcium oxide, calcium carbonate with hydrobromic acid or the reaction of calcium metal with elemental bromine ... When strongly heated in air, calcium bromide will produce calcium oxide and bromine 2 CaBr2 + O2 → 2 CaO + 2 Br2 In this reaction the oxygen oxidizes the bromide to ...
List Of CAS Numbers By Chemical Compound - C
... Chemical formula Synonyms CAS number Ca(AlH4)2 calcium tetrahydroaluminate 16941-10-9 CaAl2O4 calcium aluminate 12042-68-1 CaB6 calcium boride 12007 ...
Calcium, New York - Demographics
... There are 1,052 households out of which 62.1% have children under the age of 18 living with them, 72.6% are married couples living together, 10.9% have a female householder with no husband present, and 13.4% are non-families. 10.1% of all households are made up of individuals and 1.9% have someone living alone who is 65 years of age or older ...