What can appen when an atom absorbs energy?
An increase in kinetic energy or a phase change
Agreed with Rutherford's model but added something to it
Energy levels - the possible energies that electrons in an atom can have
When an atom gains energy an electron may move to a higher energy level
When it loses the energy, it emits it as light
No two elements have the same set of energy levels, so they emit different colors of light
Electron cloud model - model of the most likely locations for electrons in an atom (deals with probability)
Orbital - region of space where an elecron is likely to be found
Electron configuration - arrangement of electrons in the orbital of an atom
Ground state - electrons are all in their lowest possible energy levels (most stable)
Excited state - one or more electrons are in a higher anergy level than usual (least stable)
Atoms emit light when their electrons return to ground state