Use protons, neutrons, and electrons to build elements. As the number of protons, neutrons, and electrons changes, information such as the name and symbol of the element, the Z, N, and A numbers, the electron dot diagram, and the group and period from the periodic table are shown. Each element is classified as a metal, metalloid, or nonmetal, and its state at room temperature is also given.Updated HTML5
I use this activity to help students to learn why ions have the charge they have. It also moves into why... (more) certain atoms behave the way they do in terms of how many electrons they will gain or lose.
Chemistry, Middle School Physical Science