In class we have learned about the periodic table of elements. We have also learned about electrons, neutrons and protons. Protons are positive, neutrons are neutral and electrons are negative. The number of protons and neutrons determine its electrical charge. We also learned that, as electrons move, protons stay in place. We also used electroscopes which work because of static energy. As we rub the wool on pvc pipes we create static energy. That energy attracts the electrons and with out the electrons, the protons repel and move apart.