It turned green.Reason:The copper in the penny reacts with the oxygen in the air to form the green colored copper oxide(一氧化铜).Hello, everyone. Here is my report on the chemical experiment“41.___”. At first,I folded a kitchen towel or a paper towel a few times to get it a...
A penny doesn't technically "rust." The copper plating corrodes, resulting in green surface tarnish. The corrosion is from oxidation — a chemical reaction between the metal and oxygen, water and carbon dioxide in the air. Rust is the term used to describe this process when it happens to ...