This activity covers the parts of an atom including protons, neutrons, and electrons. Students must know the location of each subatomic particle in the atom, its charge, atomic number, isotopes, mass number, atomic weight, amu, valence electron, positive, negative, neutral, electricity, Periodic Table of the Elements, nucleus, energy level, ion, Thomson, and Rutherford. Perfect way to check for understanding, review, or use as a quiz or short test. The answers are presented in a multiple choice