Calcium Compounds

Calcium Compounds

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 Calcium Compounds:  Notable Characteristics, Compounds, Isotopes, Geochemical Cycling, History, Occurrence, Applications, Nutrition, Hazards and Toxicity

Other articles related to "calcium, calcium compounds":

Calcium - Hazards and Toxicity
... Compared with other metals, the calcium ion and most calcium compounds have low toxicity ... This is not surprising given the very high natural abundance of calcium compounds in the environment and in organisms ... Calcium poses few serious environmental problems, with kidney stones the most common side-effect in clinical studies ...
Calcium Compounds - Hazards and Toxicity
... Compared with other metals, the calcium ion and most calcium compounds have low toxicity ... This is not surprising given the very high natural abundance of calcium compounds in the environment and in organisms ... Calcium poses few serious environmental problems, with kidney stones the most common side-effect in clinical studies ...

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