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