I've noticed that some of my coins have turned blue. I'm wondering why this has happened. Could it be due to some chemical reaction or environmental factors? Is this a common occurrence, and should I be concerned about the value or authenticity of my coins?
7 answers
DongdaemunTrendsetter
Wed Nov 13 2024
Oxidation is a chemical reaction.
isabella_bailey_economist
Wed Nov 13 2024
It involves the loss of electrons by a substance.
Lorenzo
Wed Nov 13 2024
When copper undergoes oxidation, it reacts with oxygen.
DavidLee
Wed Nov 13 2024
The result of this reaction is a change in color.
CryptoWizardry
Tue Nov 12 2024
Copper turns a blue-green hue when it oxidizes.