An introduction to the quantum view of nature with applications to atomic and molecular structure. Methods to describe the quantum world are introduced, used to describe simple electronic, vibrational and rotational structure of model systems, and applied to the hydrogen atom, many-electron atoms, simple diatomic molecules, and the electronic structure of polyatomic molecules. The laboratory portion of the course consists of practical applications enriching and illustrating the lecture material, and incorporates the use of computers as a routine aid to processing experimental results. Prerequisites: CHEM 102 or 105; one 200-level CHEM course; MATH 115 or 136 or 146 and PHYS 124 or 144. Corequisite: PHYS 146 if PHYS 144 presented as a prerequisite instead of PHYS 124.