#29 CopperCopper is a chemical element with 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 reddish-orange color. Atomic mass:63.546 amu Melting point:1083.0 C (1356.15 K, 1981.4 F) Boiling point:2567.0 C (2840.15 K, 4652.6 F) Density:293 K: 8.96 g/cm3 |