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Calcium

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by

Jihong Lee

on 30 October 2013

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Transcript of Calcium

Calcium
"The Bone Mineral"
Basics
Isotopes
How Common?
How does calcium react?
What would happen if there was no calcium?
Creation of Calcium
Where can we find Calcium?
1808
Sir Humphrey Davy
lime (CaO) + mercuric oxide (HgO)
24 isotopes with mass numbers from 34 to 57

Ca-40
Ca-42
Ca-43
Ca-44
Ca-46
Ca-48
97%
0.6%
0.1%
2%
0.004%
0.2%
Osteoporosis
weakening of the bones due to low bone density
99% in the bones and teeth
others in organs, muscles, blood
about one-third of our body weight is the weight of calcium
Rickets/Osteomalacia
softening of the bones in children, softening of the bones with pain
period 4, group 2: Alkaline Earth Metal
HEALTH
boiling point: 839.0 C
melting point: 1484.0 C
20 protons
20 neutrons
20 electrons
3.5% of the Earth's crust
5th most abundant element on crust
calcis (lime)
calcium + oxygen = calcium oxide
calcium + water = calcium hydroxide + hydrogen
calcium + acids = calcium (acid) + hydrogen
Why Calcium?
by Jihong Lee
Full transcript