3 inch Copper Element Cube

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Copper's atomic number is 29 and its symbol is Cu. Copper has been used by mankind since... well, the copper age. Its high conductivity makes it perfectly suited for electronic wir ing. Throughout history, it has been used for currency, artwork, and even jewelry. It is also a key ingredient in alloys such as bronze and brass. On its own, it tarnishes relatively fast into a greenish color. A good example of its oxidization is the Statue of Liberty in the United States. The statue was originally a nice shiny copper color, but by design, it transitioned to the green color that it is today. Show more