yes
Rusted cast iron.
Rust on iron is a hydrated iron oxide.
Rusted iron, or iron oxide, does not contain the same magnetic properties as pure iron. The presence of rust creates a barrier between the iron atoms and the magnetic field, reducing the overall magnetism. Additionally, the rust itself is not magnetic, further decreasing the attraction to a magnet.
Rusted Iron that rusted over thousands of millions of years!
it will be rusted because of the H2O and oxgen
This is not pure iron but a special steel.
Iron and oxygen
It rusted away.
If it is "rusted out" you do not repair it, You do replace it with XHCI
no it is a chemical change
Rust is not very strong.
Rusted iron does not always have the same chemical composition. The rust itself always contain both iron and oxygen, but the proportions between these two elements can vary considerably. If there is plenty of oxygen and time, the rust itself approaches the composition of pure ferric oxide, with formula Fe2O3. Unless the original iron was very thin, however, some un-rusted iron always remains, so that the total composition of the rusted iron overall is still uncertain, unless measured for a particular sample.