2007-03-01 09:29:55 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Copper isn't made it is mined and then smelted into ore.
The Syko Ward
2007-03-01 09:33:18 · answer #1 · answered by The Syko Ward 5 · 0⤊ 0⤋
Copper ore comes from, among other places, Zambia and various other central African countries, Australia and Chile, and it's smelted. The purest copper, electrolytic copper, is used for electrical wiring. This is about 99.9% pure. Even a small amount of impurity causes a big increase in electrical resistance. Electrolytic copper is made from low grade copper by making the impure copper the anode in an electrolytic cell. The anode gradually dissolves and is deposited on the cathode, and the impurities form a sludge. This process uses a large amount of electricity, so electrolytic copper is quite expensive.
2007-03-01 18:12:13 · answer #2 · answered by zee_prime 6 · 0⤊ 0⤋
Copper is a naturally occuring metalic ore that is part of the Earth's crust and is not made, only processed. Check out this link.
http://www.wiley-vch.de/contents/ullmann/ull_10202.html
2007-03-01 18:09:09 · answer #3 · answered by Jules G 6 · 0⤊ 0⤋
Copper is a mined mineral created by geological pressure, like diamonds and all other minerals.
2007-03-01 17:33:54 · answer #4 · answered by itry007 4 · 0⤊ 0⤋
copper is made inside the earth and we mine it for use.
2007-03-01 20:17:03 · answer #5 · answered by Anonymous · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Copper
2007-03-01 17:32:33 · answer #6 · answered by peersignal 3 · 0⤊ 0⤋