When building an atom, pay close attention to the particles' electrical charges. Protons have a charge of +1. Electrons have a charge of -1. Neutrons are neutral, as its name implies. A stable ...

A hydrogen atom has one proton as the nucleus and one electron in the ... electrons from the skin are transferred to the plastic giving the plastic a negative charge. When the plastic is moved near ...

Chadwick's own research focused on radioactivity. In 1919 Rutherford had discovered the proton, a positively charged particle within the atom's nucleus. But they and other researchers were finding ...

Normally, the positive and negative charges cancel out because there are the same number of each. So the atom has no overall charge - it is neutral. But when you rub one, neutral, electrically ...