All materials that are known contain two basic components of electric charge: the [[proton]] and the [[electron]]. The proton is a basic particle with positive polarity, and the electron is the smallest amount of electric charge having negative polarity. | All materials that are known contain two basic components of electric charge: the [[proton]] and the [[electron]]. The proton is a basic particle with positive polarity, and the electron is the smallest amount of electric charge having negative polarity. |