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Published on Nov 21, 2015
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1.
Calcium
by: Jason Bolanos
Photo by
Noel Hendrickson
2.
calcium
Chemical Symbol: Ca
Average atomic mass: 40.078+0.004u
Atomic Number: 20
Photo by
tommaync
3.
Calcium
Calcium is a chemical element with a symbol Ca and an atomic number is 20.
Origin of name: is from the Latin word "calx" meaning "lime".
Calcium is founded on the Earth crusts
Is an alkaline earth metal.
Photo by
tommaync
4.
calcium
The number of valence electron: 2
calcium's position in the periodic table is 4th.
You can find calcium in rocks,seashells,chalk,and in bones.
Photo by
Digital Vision.
5.
calcium
We use calcium in are everyday life when we drink milk.
Milk has a lot of calcium in it that makes are bones stronger.
calcium was discovered in 1808 by Sir Humphrey Davy from England.
calcium is found in rocks, seashells, chalk, and in our bones.
Photo by
Christopher Robbins
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