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 ...

As they studied atomic disintegration, they kept seeing that the atomic number (number of protons in the nucleus, equivalent to the positive charge of the atom) was less than the atomic mass ...

The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus ... electrons from the skin are transferred to the plastic giving the plastic a negative charge. When the ...