er Wikipedia Copper WikipediaChinese20191027 ensp 0183 enspCopper is a chemical element with the symbol Cu from Latin cuprum 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 pinkishorange color Copper is used as a conductor of heat and electricity as a building material and as a Characteristics ensp 0183 ensp