Copper is an excellent conductor of electricity and heat, and is also resistant to corrosion and oxidation. After iron, it is the most used metal. Copper is used primarily in electrical wires, but also in cooking utensils, watches, currency, lubricants, and plumbing. It can be mixed with other metals to form alloys such as brass.
Copper is mankind's oldest metal, dating back more than 10,000 years. A copper pendant discovered in what is now northern Iraq goes back to about 8700 BC.
Archeologists have recovered a portion of a water plumbing system from the Pyramid of Cheops in Egypt. The copper tubing used was found in serviceable condition after more than 5,000 years.
When Columbus sailed to the Americas, his ships, Nina, Pinta and Santa Maria, had copper skins below the water line. The copper sheathing extended hull life and protected against barnacles and other kinds of biofouling.
Paul Revere, produced the bronze cannon, spikes and pumps for the famous ship, Old Ironsides. Revere was one of the earliest American coppersmiths.
Each year in the U.S., nearly as much copper is recovered from recycled material as is derived from newly mined ore.
An average single family home uses 439 pounds of copper:
195 lbs. building wire
151 lbs. plumbing
24 lbs. brass goods
46 lbs. Built-in appliances
12 lbs. builder hardware
10 lbs. misc wire and tube
There's more than 50 pounds of copper in an American-built automobile.
There's about 9000 pounds of copper in a Boeing 747-200 jet plane.
The Statue of Liberty contains 179,000 pounds of copper
Physical Properties of Copper
Atomic number: 29
Atomic weight: 63.546
Melting point: 1,083 degrees C
Boiling point: 2,567 degrees C
Tensile strength: approx. 19,000 psi
Copper is still used in antifouling boat paints, but that is likely to be outlawed soon here, as it already has been in the US.
The only practical substritute for many of copper's uses would be gold, but that would not be economical as there is much less gold in the earth than copper.
Hope that helps!
2006-11-26 12:16:35
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answer #1
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answered by minefinder 7
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there are a number of ability of extracting copper from ore. one that i'm familiar with includes making a slurry (generally good airborne dirt and airborne dirt and dirt/ ore with adequate water to make it bypass) and introducing cyanide. The cyanide will settle for chemical bonds from the copper yet not the different impurities. LAter, the copper is seperated from the cyanide with temperature and tension.
2016-10-13 04:17:23
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answer #2
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answered by balick 4
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Pipes, including plumbing and HVAC systems; cookware; wiring; decorative roofing; coins. It's an excellent conductor of heat and electricity.
2006-11-26 13:08:00
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answer #3
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answered by Catnut 2
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wires, circuit boards, pennies, flashing used for roofing
heatsinks are not made of copper they are aluminum
2006-11-26 12:09:02
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answer #4
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answered by franco 1
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wires - copper bends easily without breaking.
heat sinks (e.g. on CPU's) - it conducts heat well
2006-11-26 12:03:25
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answer #5
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answered by Anonymous
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I'd click here, as it's too long a list to post.
http://www.copper.org/resources/suppliers/CDAProductSearch.jsp?Action=reset&prodType=3&marketID=20&service=COPPERINTRA
2006-11-26 12:06:03
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answer #6
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answered by Beth 2
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cents are coated with copper
2006-11-26 12:12:13
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answer #7
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answered by Anonymous
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