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Calcium is and important electrolyte to the body. Calcium needs to be consumed often to help bones stay strong. Calcium is also needed to help the teeth stay strong. Calcium is needed in order for plants to grow. Calcium is essential for construction  it is used in  gypsum, it is also used as a calcium carbohydrate. Calcium is used every day for research on fighting osteoporosis and for nutritional studies. Those are most of the uses for calcium.

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https://youtu.be/0As0wB4waDo

http://www.rsc.org/periodic-table/element/20/calcium

https://en.wikipedia.org/wiki/Calcium

https://www.studyread.com/calcium-uses-in-everyday-life

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Calcium is a Alkaline Earth metal.

Calcium is a silvery-white, soft metal that tarnishes rapidly in air and reacts with water.

uses

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Calcium has 24 isotopes there are 5 stable ones those are:

Ca-40 Ca-42 Ca-43 Ca-44 Ca-46

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Calcium is the 5th most abundant metal in the world

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The density of calcium is 1.54

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The 5 main stable ones are mainly used for clinical research and nutrition studies.

Calcium metal is used as a reducing agent in preparing other metals such as thorium and uranium.

Calcium is used to measure calcium absorption in women and children

Calcium is used to help fight osteoporosis

It is and important electrolyte

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Melting point 842*C

Boiling point 1484*C

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Calcium's symbol is Ca its atomic number is 20  its atomic weight is 40.08

It was named calcium after the Latin word “calyx” which means lime