Copper

Copper just above its melting point keeps its pink luster color when enough light outshines the orange incandescence color.

Unoxidized copper wire (left) and oxidized copper wire (right).

Copper 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. It is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys.

单词	Red metal
释义	Red metal 原声例句著名历史人物传记 Each day, she receives piles of reading material encased in red metal boxes. 她每天都要收到装有许多阅读材料的红色金属箱。英语百科 Copper Copper 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. It is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys.
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Red metal

Copper