Of copper with a valence of one; of copper(I).
- These reactions depend on the ability of the reducing sugar to convert cupric sulfate to cuprous oxide with a resulting color change.
- The second is a group of cuprous [copper] oxide minerals, and ‘crepitus’ is an interesting medical word with two meanings that appear in the OED - with none in Webster's.
- Under magnification, these altered surfaces do not exhibit the naturally occurring corrosion layers, such as red cuprous oxide and green, basic copper carbonate, that might be expected.
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