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Copper is a ductile and malleable base metal that is valued for its high thermal and electrical conductivity. Easily identifiable because of its iridescent, golden red color, copper and its alloys, have been used by humans for thousands of years.
Metals typically have the following physical properties: a lustrous appearance, the ability to change shape without breaking, and excellent conductivity of heat and electricity. Nonmetals typically do not have these physical properties, although there are some exceptions. However it is the chemical difference that really counts. Metals tend to lose electrons to form positive ions, and nonmetals tend to gain electrons to form negative ions. 15 people found this useful.