Copper
For pennies.
Atomic Number: 29
Atomic Symbol: Cu
Atomic Weight: 63.546
Electron Configuration:[Ar]4s^1 3d^10History
(Latin cuprum , from the island of Cyprus) It is believed that copper has been mined for 5,000 years.
Properties
Copper is reddish and takes on a bright metallic luster. It is malleable, ductile, and a good conductor of
heat and electricity (second only to silver in electrical conductivity).
Sources
Copper occasionally occurs native, and is found in many minerals such as cuprite, malachite, azurite,
chalcopyrite, and bornite.
Large copper ore deposits are found in the U.S., Chile, Zambia, Zaire, Peru, and Canada. The most
important copper ores are the sulfides, the oxides, and carbonates. From these, copper is obtained by
smelting, leaching, and by electrolysis.
Uses
The electrical industry is one of the greatest users of copper. Iron's alloys -- brass and bronze -- are very
important: all American coins are copper alloys and gun metals also contain copper.
Copper has wide use as an agricultural poison and as an algicide in water purification. Copper
compounds, such as Fehling's solution, are widely used in analytical chemistry tests for sugar.
Copper