Electricity has been used for decades and scientists have been experimenting
with it longer. We know that everything that exists consists of particles
called molecules. Molecules are further divided into a material called atoms.
Atoms consist of some arrangement of protons, electrons, and neutrons. The
proton is a positive charged particle; the electron is a negative charged
particle; and the neutron is not charged. Molecules are a very basic necessity
and protons will always be located in the center of an atom. The electrons
will always be located in the outer shells of the atom. There are two types of
electrons. They are the bound electron and the free electron. The free
electrons are the electrons which will be found in the outermost shell, or
orbit of the atom and can be moved readily from their orbit. The innermost
shells of the atom contain electrons that are not easily freed and are referred
to as bound electrons.