How and Why does copper corode under a flame?

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How and Why does copper corode under a flame?

2007-12-16 07:09:04 · 2 answers · asked by jim_walks 2 in Science & Mathematics ➔ Physics

2 answers

It is oxidizing and that is copper oxide you see as a result.

2007-12-16 07:12:46 · answer #1 · answered by Rich Z 7 · 1⤊ 0⤋

If you actually do this, you'll see the place under the flame doesn't corrode as it is in a neutral (burnt gases) or reducing (unburnt gases) atmosphere. It's only after the flame moves on and the oxygen in the air can get at the hot surface that oxidation starts.

If the flame is hot enough (above 1000C) it will melt the surface, leaving little pits.

2007-12-16 15:52:15 · answer #2 · answered by mis42n 4 · 1⤊ 0⤋