Emission+of+Light


 * Describe the concepts of
 * an atom being “excited” above its ground state by the addition of energy, resulting in the electron(s) moving to a higher energy level.
 * when the atom returns to its ground state, the electron(s) releases that energy gained as electromagnetic radiation (emissions spectrum).
 * Articulate that this electromagnetic radiation is given off as a photon(s). This photon represents the physical difference between ground state and excited state.
 * Use the “Bohr Model for Hydrogen Atom” and “Electromagnetic Spectrum” diagrams from the Reference Tables to relate color, frequency, and wavelength of the light emitted to the energy of the photon.
 * Explain that Niels Bohr produced a model of the hydrogen atom based on experimental observations. This model indicated that:
 * an electron circles the nucleus only in fixed energy ranges called orbits;
 * an electron can neither gain or lose energy inside this orbit, but could move up or down to another orbit;
 * and that the lowest energy orbit is closest to the nucleus.