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Chemical Elements: Carbon and Chlorine

Updated on May 28, 2008

Photo taken from http://blog.michaelgaio.com.

Carbon

Symbol: C

Origin: From the Latin word "carbo", meaning charcoal, a material that is composed primarily of carbon.

Discovery: Carbon was discovered since the ancient times. No known discoverer yet.

Properties: Carbon is one of the vital elements in all living things. Carbon is available in several forms including amorphous, powder and graphite rods, diamond, carbon black, bone black, coal, "bucky tubes", foil, sheet, and wire. Substances that contain carbon is called organic compounds.

Uses: It is used for pencils, dry ice, diamonds, petroleum, welding, filters.

Photo taken from http://www.bradleygoughdiamonds.com

Chlorine

Symbol: Cl

Origin: From the word "chloros" or greenish yellow.

Discovery: Elementary chlorine was first isolated in 1774 by the Swedish chemist Carl Wilhelm Scheele, who thought that the gas was a compound. It was not until 1810 that the British chemist Sir Humphrey Davy proved that chlorine was an element and gave it its present name.

Properties: Chlorine is a greenish yellow gas which combines directly with nearly all elements. Chlorine is a respiratory irritant. The gas irritates mucous membranes and the liquid burns the skin. It has an irritating odor and dangerous in large concentration. Chlorine solutions in water are familiar in the home as bleaching agents.

Uses: Water purifiers, paper, dyes, textiles, antiseptics, foodstuffs.

Photo taken from http://www.lenntech.com

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