Copper

Copper is a chemical element; it has symbol Cu (from Latin ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-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.

The Chalcolithic ( ) (also called the Copper Age and Eneolithic) was an archaeological period characterized by the increasing use of smelted copper. It followed the Neolithic and preceded the Bronze Age. It occurred at different periods in different areas, but was absent in some parts of the world, such as Russia, where there was no well-defined Copper Age between the Stone and Bronze Ages. Stone tools were still predominantly used during this period.

mineral (as opposed to the chemical element)

planetary, alchemical and gender symbol

reddish brown color

Aurubis AG (formerly Norddeutsche Affinerie AG) is a global supplier of non-ferrous metals and one of the world's largest copper recyclers. The company processes complex metal concentrates, scrap, organic and inorganic metal-bearing recycling materials, and industrial residues into metals. Aurubis produces a variety of copper products, such as wire rods, continuous cast shapes, profiles, and flat rolled products. Aurubis also produces a range of other metals, including precious metals such as selenium, lead, nickel, tin, and zinc. The portfolio includes other products, such as sulfuric acid an

electrical wire or other conductor made of copper

covering object with layer of copper

Representative List of the Intangible Cultural Heritage of Humanity in Azerbaijan, inscribed in 2015

smelting process for sulfur-containing ores

ship hull covering

type of electrical conductor

thermochemical Cycle to produce Hydrogen from Water

used in semiconductor integrated circuits

metal in heraldry

North American archaeological culture (7500–1000 BCE)

Balhashcvetmet ("Ferrous Metallurgy of Balkhash"), formerly known as BGMC (), for Balkhash Mining and Metallurgical Combine (, ), is a copper-smelting combine located on the northern coast of the Lake Balkhash in Balkhash, Kazakhstan.

was the Tokugawa shogunate's officially sanctioned copper monopoly or copper guild (za) which was created in 1636 and (1701–1712, 1738–1746, 1766–1768).

laser using vapors of copper as the lasing medium

painting with oil paints onto copper

primary (low grade) ore deposit of copper, consisting of porphyry rocks

metal trading scandal in Japan

nanoparticle composed of copper

group specially prepared, highly reactive metal powder

pure copper without oxygen in its crystal lattice