The shiny brown coloured element is Copper metal. As copper is heated in the air, it reacts with oxygen in the air to form black coloured copper oxide.
2Cu(s) + O2(g) → 2CuO(s)
Copper(Cu) is a chemical element with atomic number 29. It can be classified as a native metal that can occur in nature in its pure form. Few properties of copper are tabulated below.
|Melting point||1084.62°C, 1984.32°F, 1357.77 K|
|Boiling point||2560°C, 4640°F, 2833 K|
|Relative atomic mass||63.546|
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