if you put iron near a magnet the iron will be attracted to the magnet. rust is made up of molecules that contain iron atoms and oxygen atoms. rust is not attracted to a magnet. if rust contains iron atoms and iron is attracted to a magnet why isn't rust attracted to a magnet?
when an atom is part of a molecule the molecule does not take on the characteristic of the atom . instead the atoms in the molecule join together in a way that gives the molecule its own characteristics