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It's probably oxidation, not rust.

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14y ago
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6mo ago

Rust occurs on iron and steel when they oxidize in the presence of moisture and oxygen. Copper does not rust; instead, it forms a patina when it oxidizes, which is a greenish layer that protects the copper from further corrosion.

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Q: What causes rust on copper?
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Related questions

Which metal rust fastest copper bronze or steel?

iron will rust faster because the hydrogen molecules combine with metalic molecules in the iron faster which causes the chemical reaction process to speed up sincerly, Jake from AZ 7th grade student


How does copper rust?

by me


Why do copper pipes carrying hot water rust more quicker?

Copper doesn't rust


Can copper pennies rust?

Copper does not rust, but it can develop a patina or greenish tarnish when exposed to air and moisture over time. This patina can actually help protect the copper from further corrosion.


What causes a penny to get rusty?

If i remember rightly, rust is just a metal oxide. So on a coin it would be copper reacting with the air, albeit slowly, forming copper oxide.


Why do pipes rust?

Plastic pipe does not rust, brass does not rust, copper does not rust. Stainless steel does not rust, lead pipe does not rust.


What chemical in copper makes it rust?

The only chemical that could make something rust is iron; "rust" refers specifically to the corrosion of iron, so copper cannot rust. However, its corrosion is caused by copper itself being oxidised and forming compounds which are water soluble and also easier to damage.


Which element rust copper?

Oxygen turns copper green.


Why do boat builders use copper nails?

copper does not rust


What can cause copper on the exterior of a house to have a red rust appearance?

Most likely some other object has dripped rust onto the copper, which can be removed. Copper does not rust, but it does form a green patina over time.


How long does it take copper to rust?

Copper does not rust; it develops a greenish film called patina when exposed to air and moisture. The formation of patina can take several years, depending on the environmental conditions.


Who discovered copper can't rust?

copper turns to blue-green copper oxide.