Term: calcium (Ca)
Literally meaning:
“pertaining
to lime stone”
Origin:
χάλιξ/khalix(=pebble, gravel)
>(latin) calx(gen calcis) =limestone (calcium carbonate, CaCO3).
Coined/History
Calcium was isolated and named by English chemist Sir
Humphrey Davy (1778-1829) in 1808, through the electrolysis of a mixture of lime
(CaO) and mercuric oxide (HgO).
Definition
Calcium is a soft gray silvery chemical elements with atomic number 20 and atomic
mass 40.078. It’ s abumdant in earth although it is not found free in nature. Calcium is important in cell physiology and essential
constituent of teeth, bones, leaves and shells.
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