The sun and earth air paticles stick to the bumper and then the particles eat at the bumper and then it turns into rust
The cause of iron rust is oxygen and water.
I am quite sure that rust is a chemical change. Rust is caused when oxygen atoms begin bonding with the iron in the nail, which makes it a compound instead of a pure element.
An iron nail will rust slowly in distilled water when that water has dissolved oxygen. If you get rid of the oxygen by boiling and keep it from getting back in then the iron nail will not rust at all.
It depends on what you mean by "heavier." Rust is less dense than iron. However, if you allow 1 gram of iron to rust completely, you will have more than 1 gram of rust. if we have equal volume of pure iron and rust (ferric oxide) then rust is lighter than iron.
There is 1 Iron atom and 2 oxogen atoms in Iron rust.
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The cause of iron rust is oxygen and water.
I'm sure you meant to ask what makes iron rust. Rusting is a different way of saying oxidation. Oxygen reacts with iron to form iron oxide, or rust.
This is a normal rusting.
The gas that makes a wet iron nail rust is oxygen. When iron comes into contact with oxygen in the presence of water, it undergoes a chemical reaction called oxidation, forming iron oxide, which is the rust that we see.
Oxygen Gas
Salt water.
"Rust" is the result of a reaction between iron and oxygen. Copper has no iron in it, so does not rust. It can corrode, though, and yield a bright whitish-blue material.
Any water makes iron rust. Rust is iron oxide. It happens when water allows the oxygen to dissolve in it and get to the surface of the metal. Salt water has dissolve salts in it which makes it work faster.
Iron combines with oxygen in the air to form ferric oxide, also known as rust.
It's not just saltwater that makes a nail rust, even water makes a nail rust. Rust is simply oxidation, it happens when oxygen comes into contact with something and creates a chemical reaction and creates "oxides". Iron + oxygen = Iron oxide (red rust on steel)
I'm not so good at science but I think The Oxygen from the water (H20) oxidises the iron and makes iron oxide, which is rust.