The scientific name for rust is hydrated iron oxide.
Rusting occurs when iron is exposed to oxygen and water. Both of these have to be present for iron to rust. When iron is exposed to oxygen, it will form iron oxide and when iron oxide is exposed to water, it will form hydrated iron oxide. The rusting of iron is called corrosion.
Rusting is an example of a chemical reaction as:
A new substance is formed
There is colour change
It is permanent
A way to prevent iron from rusting is to galvanize it, or paint it or seal it from exposure to oxygen or water as both of these a needed for corrosion. If one of these are absent then corrosion cannot happen.
Rusting occurs when iron is exposed to oxygen and water. Both of these have to be present for iron to rust. When iron is exposed to oxygen, it will form iron oxide and when iron oxide is exposed to water, it will form hydrated iron oxide. The rusting of iron is called corrosion.
Rusting is an example of a chemical reaction as:
A new substance is formed
There is colour change
It is permanent
A way to prevent iron from rusting is to galvanize it, or paint it or seal it from exposure to oxygen or water as both of these a needed for corrosion. If one of these are absent then corrosion cannot happen.