Question

Copper does not burn in oxygen but the hot metal is coated with a black coloured layer of copper oxide

Answer 1

Answer:

Explanation:

Copper metal when exposed to hearing in air, oxygen reacts with copper surface forming thin layer of copper oxide over it. This cupric oxide is already burnt and can't go reaction further. ... Therefore, whole copper doesn't burn, instead black coat of copper oxide is formed over it.

Answer 2

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