Which of the following is true about an atom of iron and an atom of copper? They have different masses.
Both have the same properties.
They have an equal number of protons.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

c. newton's third law of motion