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a copper colored wire has darkened after it was heated and cooled. what type of change has occcoured?

2007-02-07 03:06:51 · 2 answers · asked by perfect_imperfection 2 in Science & Mathematics ➔ Chemistry

2 answers

steve's right. and oxidition is a chemical reacton as opposed to a physical change.

2007-02-07 03:18:13 · answer #1 · answered by Dr W 7 · 1⤊ 0⤋

Oxidation. 2Cu + O2 ===> 2CuO (black)

2007-02-07 03:16:12 · answer #2 · answered by steve_geo1 7 · 1⤊ 0⤋

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