IB Marine Science Standard Level (SL) Practice Exam

Charge is a fundamental property that determines how particles interact with electric fields. Among the basic subatomic particles, the proton carries a positive charge, electrons carry a negative charge, and neutrons are neutral. The nucleus is the central region of an atom containing protons and neutrons; it’s not a single particle itself, though the protons inside give the nucleus a net positive charge. So the subatomic particle with positive charge is the proton.