When discussing magnetic fields we could say that
metals can become magnetic if they have many spinning electrons that create magnetic fields.
metals are magnets because they have more electrons than non–magnetic materials.
non–paired electrons spin in opposite directions creating a magnetic field.
the spinning electrons in some atoms pair up and create a magnetic field.

When discussing magnetic fields we could say that metals can become magnetic if they have many spinning electrons that create magnetic fields.

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Answers;

Metals can become magnetic if they have many spinning electrons that create magnetic fields.

Explanation;Magnets are materials that have the capability of generating magnetic fields. They repel non-magnetic materials such as wood, plastic etc. and attract magnetic material such as iron and steel.Magnetic materials such as iron and steel may be used to make magnets by the process of magnetization. In these magnetic materials such as iron, cobalt and nickel,electrons spin in the same directions which makes the, magnetic but not yet magnets.For metals to attain magnetism they have to be magnetized by having them enter the magnetic field of an existing magnet.