Laser
Objectives Describe the particles within atoms and the structure of atoms. What are elements? Relate the energy levels of atoms to the chemical properties.
Atomic nuclei have an energy-level structure somewhat similar to the energy levels of atoms, so that they may emit (or absorb) photons of particular energies,
Matter and Atomic Structure Chap. 3 What are elements? How atoms combine States of matter States of matter.
Matter and Atomic Structure Text ref. Ch.3, (pg. 52)
Chapter 3
