Calcium

Chloe H. **Calcium** "Who discovered calcium." Who discovered calcium. N.p. n.d. Web. 7 Mar 2012 [] "Periodic Table: Calcium." Periodic Table: Calcium. N.p., n.d. Web. 7 Mar 2012. [] Created by: Yinon Bentor Singha, Rajib. "Buzzle.com." //Calcium: Common uses//. N.p., n.d. Web. 8 Mar 2012. [] "YouTube." //Reaction of Calcium and Oxygen//. N.p., n.d. Web. 12 Mar 2012. []
 * **Name of Element ** || **Calcium ** ||
 * **Element Symbol ** || **Ca ** ||
 * **Atomic Number ** || **20 ** ||
 * **Atomic Mass ** || **40.08 ** ||
 * **Number of protons, electrons, and neutrons ** || **P=20 E=20 N=20 ** ||
 * **Trend ** || **Metal ** ||
 * **State of matter ** || **Solid ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Common uses ** || **Used as a reducing agent in mining extraction of thorium, uranium and zirconium and blackboard chalk** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Family / Group ** || **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">2 ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Bohr Model ** || [[image:science3-2012/bohrmodel.JPG width="55" height="76" align="center"]] ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Lewis Structure ** || [[image:science3-2012/lewis-structure.JPG width="237" height="76"]] ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">When Discovered ** || **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">1808 ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Who Discovered ** || **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Sir Humphry Davy ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Where found ** || **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Discovered in England ** ||
 * **Interesting Facts/ Information** || **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">It is the fifth item in order of abundance in the earth's crust. It’s also an essential for life on earth ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Common isotopes ** || **<span style="font-family: 'Arial','sans-serif'; font-size: 16px;">Ca-40, Ca-41, Ca-42, Ca-43, Ca-44, Ca-45, Ca-46, Ca-47, Ca-48, Ca-49 ** ||
 * **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Boiling/melting point ** || **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Boiling point = 1484.0 °C Melting point = 839.0 °C ** ||

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