Copper

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 * == Element name- Copper ==
 * == Atomic symbol- Cu ==
 * == Atomic number- 29 ==
 * == Atomic mass- 63.546 ==
 * == Standard state of matter- solid at 298 K ==
 * == Density- 8.96 ==



= ﻿Research Paragraphs: =

The discovery of copper dates from prehistoric times. There are reports of copper beads dating back to 9000BC found in Iraq. Copper is used for wire, coinage metal, copper compounds such as Fehling's solution are widely used in analytical chemistry in tests for sugar, the electrical industry is one of the largest users of copper, and copper sulfate is used as an agricultural poison and purifier. The name copper comes from the Latin word "//cuprum//" meaning the island of "//Cyprus//". Methods for refining copper from its ores were discovered around 5000BC and a 1000 or so years later it was being used in pottery in North Africa.

Copper is one of the most important metals. Copper is reddish with a bright metallic lustre. It is malleable, ductile, and a good conductor of heat and electricity (second only to silver in electrical conductivity). Its alloys, brass and bronze, are very important. Monel and gun metals also contain copper. Apparently the reason that policemen in the USA are nicknamed "cops" or "coppers" is to do with their uniforms which used to have copper buttons.

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