Atoms and Molecules Atoms and Molecules Atoms and Molecules Matter is anything that has weight and takes up space. All matter is made up of molecules. All Molecules are made up of Atoms. The Atom is made up of Protons and Neutrons in a nucleus with electrons forming shells around them - much like the solar system.
Electrons have a negative charge and protons have a positive charge.
The electrons can be forced to move from one atom to the next and this is accomplished using an electromotive force. This movement of electrons is electrical current.