Calcium Research Paper

Calcium is one of the most abundant element in the earth's crust at number 5. Calcium has a very high chemical reactivity so it is never found as an uncombined state in nature. It is a silvery-white metal and it is in the alkaline earth family. Calcium is needed for blood clotting and controlling cell responses in nerves and muscles.Ninety-nine percent of the calcium in the human body is in our bones and teeth. Bone tissues are renewing themselves constantly and to do that they have to build new cells. Bones build new cells by storing calcium compounds that reach the body through the blood system. Chalk, limestone and marble are made with calcium carbonate. Calcium is in natural things as well as man made things. It helped build your house.
Davy did this by electrolyzing a mixture of lime and mercuric oxide. Davy is famous for discovering potassium, sodium, chlorine, and other elements using powerful voltaic batteries. Davy was born in Penzance in Cornwall, England. He wasn't the best student because he was uninterested in school. When he was 16 he went into an apprenticeship as an apothecary to a doctor. He wanted to become a medical doctor some day. When he was 18 he began studying chemistry and performing his own experiments. Davy's chemical research impressed a few scientists and in 1798 when he was 19 he was recommended for a position at Dr. Thomas Beddoes's Pneumatic Institution in Bristol. This was an institution that researched the medical uses of gases. Davy discovered the intoxicating effects breathing nitrous oxide through self-experimentation. Davy researched the chemical and physiological properties of nitrous oxide and that's how he got his reputation as a chemist.
Food sources of calcium are milk and other dairy products like cheese and yogurt. One cup of milk has about 300 mg of calcium. Dairy products have over 75 percent of the calcium Americans consume. Theres also some non dairy sources of calcium,it is found in green leafy vegetables, oysters and small fish, corn tortillas, almonds, and sesame seeds. Many foods contain calcium and mineral waters are also high in
According to the Food and Nutrition Board of the Institute of Medicine, teenagers should intake 1,300 mg of calcium per day, adults 19 to 50 years should intake 1,000 mg per day, and for adults over 50 years should intake 1,200 mg per day. Adults who do not get enough calcium may develop osteoporosis as they get older.
On the other end, too much calcium can cause increased risk of kidney stones and other kidney problems and can interfere with mineral absorption. People who can't have milk find it difficult to get enough calcium through other foods and may need to take supplements to reach their daily calcium intake.
Calcium production in the United States began in 1939. World War II stopped imports from France and Germany so America had to start manufacturing the metal. There are two processes used to make calcium. The first process is electrolysis of fused calcium chloride or calcium fluoride. The calcium is melted in an electrically heated graphite container and there is a water-cooled iron bar just below the surface. During electrolysis, calcium is put on the iron cathode and a metal stick known as a carrot is formed. The carrots are then remelted or are vacuum-distilled to purify