Parts of an atom

Positively charged particle

Found in the nucleus

Equal to the atomic number on the periodic table

Contributes to mass of the atom

Equal to the number of electrons in a neutral atom

Neutral particle

No charge

Found in the nucleus

Contributes to the mass of the atom

Atoms can have different number of neutrons

Negatively charged particle

Found outside the nucleus of the atom in the electron orbits/level

Levels hold a maximum number of 2, 8, 8, 18

Move so rapidly around the nucleus that they create an electron cloud

mass is insignificant 1/1836

Equal to protons in a neutral atom

Involved in the formation of chemical bonds