CALCIUM

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.

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calcium

Noun

(Symbol: Ca)
  1. A chemical element, atomic number 20, that is an alkaline earth metal and occurs naturally as carbonate in limestone and as silicate in many rocks.
  2. An atom of this element.


The above text is a snippet from Wiktionary: calcium
and as such is available under the Creative Commons Attribution/Share-Alike License.

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