1. atomic mass
a fixed amount
2. atomic number
the mass of the protons plus the mass of the neutrons in the nucleus of an atom
3. ground state
fixed amounts of energy in light
4. orbital
particles that make up neutrons and protons, classified as colors and flavors
5. photon
lowest energy position of an electron in an atom
6. quantum
the number of protons in the nucleus of an atom
7. quarks
electrons in the outermost shell of the atom, capable of taking part in chemical reactions
8. valence electrons
the area around the nucleus of an atom where the probability of finding an electron is greates