One property of matter is the electric charge. Most sub-atomic particles have either a positive (+) or negative (-) electrical charge. Those that don't are considered neutral. The most common charged particles are the electron and proton. Atoms with an excess of electrons are called negative ions. Those with missing electrons are called positive ions. There is an electrical field that flows between opposite charges, causing an electrical force. This results in an attractive force between the opposite charges and a repelling force between like charges.
why do elements of oppisite charges attract?