This download has 2 powerpoint lectures, one for honors chemistry (slides 1-53) and one for college prep chemistry (54-98). Subjects include: electromagnetic radiation, wavelength and frequency calculations, wave/particle duality, energy emission of electrons, line emission spectra, electron configuration, orbital diagrams, orbital shapes, and lewis dot structures. Perfect for high school chemistry units on the electron. Each slide has point-by-point animations. Tested and perfected in the classroom!