i don't care that's a stupid question dude
Pennies do not rust because they are made of copper
Copper doesn't rust
NO!!! Because they are made of copper NOT iron.
by me
Copper doesn't rust
In recent years pennies have been made of steel plated in copper, and steel is prone to rust. Older pennies were made of pure copper, or copper and zinc, which did not rust.
Plastic pipe does not rust, brass does not rust, copper does not rust. Stainless steel does not rust, lead pipe does not rust.
It's probably oxidation, not rust.
Copper and zinc-plated pennies do not rust, because they're not made of iron. The only American pennies that could rust were the steel cents struck in 1943. You might believe that a penny is rusting but instead it is corroding! Yes, it does not rust it just corrodes.
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
i dont know of an experiment to test this but copper will not rust, and bronze being comprised of tin and copper, the answer to which will rust fastest is steel. I hope this helps you.
Oxygen turns copper green.