Calcium By Monirh Larkpor Element A white metallic element that burns with a brilliant light. It is the fifth most abundant element in the earth's crust. An important component of most plants, human and animals. WE ALL need IT to survive. Chemical symbol • Calcium is the chemical element with the symbol Ca • Atomic number Is 20. • It has an atomic mass of 40.078 amu. Calcium is a soft gray alkaline earth metal. • Is the fifth most abundant element by mass in the Earth's crust. ... Role of calcium • Help to have a normal function of the heart. • Help the nerves and bones. • Sick babies need a lot calcium and also need it to grow. Various form of calcium • Liquids 80% (milk) • Vitamins 72% (vitamins d Grain products 11% Why calcium • 99 % of calcium is in human body and teeth? • The remaining one percent is found in the soft tissues and the blood in the body. • Calcium works in conjunction with various parts of the body. Help to control the pace of your heart. It allows important nutrients to be able to move in and out of the cells in the body. Plays a crucial role in nerve function and muscle function. History • Calcium is a (Latin word calcis meaning "lime") • It came to be known in the first century when the Ancient Romans prepared lime as calcium oxide. • Back in 975 AD notes that plaster of paris (calcium sulfate), is useful for setting broken bones. • It was isolated in 1808 in England Calcium compounds • • • • • • • Calcium carbonate (CaCO3) Calcium hydroxide solution (Ca(OH)2) Calcium arsenate (Ca3(AsO4)2) Calcium carbide (CaC2) Calcium chloride (CaCl2) Calcium cyclamate (Ca(C6H11NHSO3)2) Calcium gluconat (Ca(C6H11O7)2) Daily calcium intake • • • • • • • 0-6 month 7-12 month 1-3 year 500 4-8 year 800 9-18 year 19-50 year Over 50 year 210 270 1300 1000 1200 Sources • http://www.fatfreekitchen.com/nutrition /calcium.html • http://en.wikipedia.org/wiki/Calcium • http://www.calciuminfo.com/ • http://www.chemicalelements.com/ele ments/ca.html