CALCIUM IT'S IN MILK AND BUILDS STRONG BONES. CALCIUM IT'S CORAL REEFS NOT IN STONES WHEN IT MEATS AIR IT EXPLODES.

 

 

History of calcium
            Calcium was first isolated in its metallic form by Sir Humphrey Davy in 1808 through the electrolysis of a mixture of Calcium oxide and mercury oxide; it’s a soft silvery white metal. Calcium is found in 3.5% of the Earths crust. Calcium is the most abundant element on earth.
Catagory Two Information

 

 

Hazards of calcium
            It will burn. May ignite if exposed to air. Runoff to sewer may create a fire or explosive hazard. May be harmful if inhaled. Contact may burn skin and eyes. Fire may produce irritating or poisonous gases.

 

Properties of Calcium
            Calcium has an atomic weight of 40.o78 and it’s in the group of Alkali earth metals. IT’s a crystal structure with a cube faced center and its oxidation number is 2. Its state at room temperature is a solid. Its melting point is 1112K and its boiling point is 1757K. Tarnishes to grayish white after exposed to air. It will burn. Calcium s malleable, light and is only found in nature as a compound.

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Health efeects od Calcium

Calcium ions solved in water form deposits in pipes and boilers and when the water is hard, that is, when it contains too much calcium or magnesium. This can be avoided with the water softeners. In the industry, metallic calcium is separated from the melted calcium chloride by electrolysis. This is obtained by treatment of carbonated minerals with chlorhydric acid, or like a sub product of the carbonates Solvay process.In contact with air, calcium develops an oxide and nitride coating, which protects it from further corrosion. It burns in the air at a high temperature to produce nitride.The commercially produced metal reacts easily with water and acids and it produces hydrogen which contains remarkable amounts of ammonia and hydrocarbides as impurities.

Industrial uses for Calcium

In its natural state, calcium carbonate occurs as chalk, limestone and marble. Wet and dry grinding methods are commonly used in processing for industrial uses. To obtain higher levels of brightness and lower abrasion characteristics, calcium carbonate is processed by optical sorting, flotation and/or particle-size classifying.Processed to varying degrees of purity, calcium carbonate exhibits an attractive combination of high whiteness, brightness, low hardness and reactive properties. Paper, plastic, paint, rubber and caulk producers use calcium carbonate as a way to improve quality and lower manufacturing cost. Plate glass, bottle and fiberglass producers use large quantities of calcium carbonate as a source for calcium, an essential ingredient in their manufacturing processes. Used in water treatment systems and stack-gas scrubbing systems for its ability to neutralize acidic manufacturing by-products, calcium carbonate also helps to make many industrial plants more environmentally friendly.

 

Reccomended intake daily
Male and Female age Calcium (mg/day)
0 to 6 months 210
7 to 12 months 270
1 to 3 years 500
4 to 8 years 800
9 to 13 years 1300
14 to 18 years 1300
19 to 50 yaers 1000
5!+ years 1200

 

 

Glossary
Electrolysis chemical separation by electricity: the conduction of electricity through something melted or dissolved in order to induce decomposition of the melted or dissolved chemical into its components.
Tarnishes

make or become dull and discolored: to lose shine and become dull because of oxidation or rust, or make something do this.
impurities

the quality or state of being impur
Malleable capable of being extended or shaped by hammering or by pressure from rollers
Ions An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons.
Solvay Belgian chemist who developed the Solvay process and built factories exploiting it
abrasion the act or process of abrading
neutralize to make neutral; cause to undergo neutralization
essential absolutely necessary

 

Bibliography
Table http://ods.od.nih.gov/factsheets/calcium.asp
definitions dictionary.com
images google images
   

Calcium likes Iodine to find out more about Iodine click here

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