co copper

by latwaun

Group11 Melting point1084.62 oC, 1984.32 oF, 1357.77 K Period4 Boiling point2560 oC, 4640 oF, 2833 K Blocked Density (g cm-3)8.96 Atomic number29 Relative atomic mass63.546 State at 20°C Solid Key isotopes63Cu Electron configuration[Ar] 3d104s1 CAS number7440-50-Archaeological evidence suggests that people have been using copper for at least 11,000 years. Relatively easy to mine and refine, people discovered methods for extracting copper from its ores at least 7,000 years ago. The Roman Empire obtained most of its copper from the island of Cyprus, which is where copper's name originated. Today, copper is primarily obtained from the ores cuprite (CuO2), tenorite (CuO), malachite (CuO3Cu(OH)2), chalcocite (Cu2S), covellite (CuS) and bornite (Cu6FeS4). Large deposits of copper ore are located in the United States, Chile, Zambia, Zaire, Peru and Canada.

Used in large amounts by the electrical industry in the form of wire, copper is second only to silver in electrical conductance. Since it resists corrosion from the air, moisture and seawater, copper has been widely used in coins. Although once made nearly entirely from copper, American pennies are now made from zinc that has been coated with copper. Copper is also used to make water pipes and jewelry, as well as other items.

Pure copper is usually too soft for most uses. People first learned about 5,000 years ago that copper can be strengthened if it is mixed with other metals. The two most familiar alloys of copper are bronze and brass. Bronze, the first alloy created by people, is a mix of copper that contains as much as 25% tin. Early people used bronze to make tools, weaponry, containers and ornamental items. Brass, a mix of copper that contains between 5% and 45% zinc, was first used about 2,500 years ago. The Romans were the first to make extensive use of brass, using it to make such things as coins, kettles and ornamental objects. Today, brass is also used in some musical instruments, screws and other hardware that must resist corrosion.You have just adopted Copper! Here are some things you should know....

Nobody knows his exact birth date but is estimated to be around 9000 BC. He is one of the transitional metals. When he was born, he weighed 63.546 and his height was 29. He was born in the Middle East and is a special child because nobody really knows who his parents are. He comes from a large family of 10 children and his brothers and sister’s names are Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel & Zinc! When Copper is older, he wants to be either a key, penny, wire, electromagnet, water pipe, instrument, jewellery or a pot bottom. He is a Solid. He is a strong boy and doesn’t react with anything unless it is also an oxidising agent. His boiling point is 2567. 0C, Density is 8.96 g/cm³ and Melting point is 1083.0C so you better be careful with him! he likes to be called ‘ Cu ‘ by his friends.

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