Calcium

=Calcium By: MacKenzie =  Protons: ** 20 ** Electrons: ** 20 Neutrons: ** 20 Average Atomic Mass: ** 40.078 Isotopes: ** Ca-42, Ca-44, Ca-46, Ca-48 Discovery: **Sir Humphrey Davy discovered calcium in the year 1808 in England.
 * Atomic Number: 20  **
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 * <span style="font-family: 'Comic Sans MS',cursive;">Name: **<span style="font-family: 'Comic Sans MS',cursive;"> <span style="font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Origin of the name calcium is from the Latin word “calx” which means lime.

-<span style="font-family: 'Comic Sans MS',cursive;"> Combines with some agents to have useful properties such as aluminum, beryllium, lead, copper, and magnesium - Quicklime made by heating limestone, - Cheap base for the chemical industry where it has many uses - Calcium from limestone is a ingredient in Portland cement. When mixed with sand it hardens like a plaster while taking in carbon dioxide from the air. - Results in stalagmites and stalagtites. - Dairy products are an great source of calcium
 * <span style="font-family: 'Comic Sans MS',cursive;">Uses: <span style="font-family: 'Comic Sans MS',cursive; font-weight: normal;">-Lowering agent for the preparation of metals such as uranium, thorium, and zirconium, and ect. **

Fifth most abundant element in the earth's crust Obtained from chalk, limestone and marble Only found in living organism
 * <span style="font-family: 'Comic Sans MS',cursive;">Interesting Facts **<span style="font-family: 'Comic Sans MS',cursive;">: 3.5% of Earth's crust

Picture:

webelements.com/clacium.html facts.about.org/un/scienceelement-calcium.html http://unclevinny.files.wordpress.com/2008/08/glass-of-milk.jpg http://www.youtube.com/watch?v=Jcvac9__YN4
 * <span style="font-family: 'Comic Sans MS',cursive;">Video: **<span style="font-family: 'Comic Sans MS',cursive;"> media type="youtube" key="Jcvac9__YN4" height="344" width="425"
 * <span style="font-family: 'Comic Sans MS',cursive;">Sources: chemicalelements.com/elements/ca.html

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