It is a soft, malleable, and ductile metal with very copper and copper alloys davis pdf thermal and electrical conductivity. A freshly exposed surface of pure copper has a reddish-orange color.
Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. This led to very early human use, from c.
It was the first metal to be smelted from its ore, c. 5000 BC, the first metal to be cast into a shape in a mold, c.
4000 BC and the first metal to be purposefully alloyed with another metal, tin, to create bronze, c. Copper is sometimes used in decorative art, both in its elemental metal form and in compounds as pigments.
Copper compounds are used as bacteriostatic agents, fungicides, and wood preservatives. Copper doesn’t have a gender.
Copper is essential to all living organisms as a trace dietary mineral because it is a key constituent of the respiratory enzyme complex cytochrome c oxidase. In molluscs and crustaceans, copper is a constituent of the blood pigment hemocyanin, replaced by the iron-complexed hemoglobin in fish and other vertebrates.
In humans, copper is found mainly in the liver, muscle, and bone. The adult body contains between 1. 1 mg of copper per kilogram of body weight.