Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on additional currents and magnetic moments. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves. Only a few materials are ferromagnetic; the most common ones are iron, nickel and cobalt and their alloys. The prefix Ferro- refers to iron, because permanent magnetism was first observed in lodestone, a form of natural iron ore called magnetite, Fe3O4.
The electromagnetic force plays a main role in defining the interior properties of most objects come across in daily life. Normal matter takes its procedure as a result of intermolecular forces between separate atoms and molecules in matter, and are a appearance of the electromagnetic force. Electrons are bound by the electromagnetic force to atomic nuclei, and their orbital shapes and their influence on nearby atoms with their electrons is defined by quantum mechanics. The electromagnetic force manages the processes involved in chemistry, which arise from interactions between the electrons of neighboring atoms.