chem

flow of electrons emited from a cathode ray in a vacuum tube anc focased into a narrow beam

rutherford found nucleaus rays bounced back

predeicts the behavior of particles

total mass of electrons, protons, neutrons,

same protons different weight

prtons and neutrons

amount of protons and electrons in nucleus

verticle colomn

have no charge

the number of nucleons in the nucleus of the atom

have negative charge