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Is Pure Copper Pink?

Published in Chemistry & Materials 1 min read

Yes, pure copper, before it oxidizes, is actually a pink color.

While we typically see copper as a reddish-brown metal, this is due to the rapid formation of copper oxide on its surface when exposed to air. This oxidation process occurs so quickly that it obscures the true pink hue of pure, untarnished copper. Therefore, any readily available copper will almost always exhibit the familiar reddish-brown color.

Think of it like a freshly cut apple turning brown when exposed to air. The actual flesh of the apple isn't brown, but the oxidation process quickly changes its appearance. Similarly, copper's natural pink color is fleeting unless kept in an oxygen-free environment.

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