How can you magnetize an item that is ferromagnetic?

heat it

spin it

rub it with a soft cloth

place it in a magnetic field

The answer is to place it in a magnetic field. Using an existing magnet, you can magnetize everyday household items that contain iron, cobalt or nickel, which are metals that exhibit the property of ferromagnetism. Ferromagnetism is a subatomic property of some metals created by the structure of the electron clouds around the atoms. When the electrons of the metals align in a particular way, the metal produces a magnetic field.