CHE 106 Chapter Notes - Chapter 6: Planck Constant, Photon, Continuous Spectrum

• School: Syracuse University
• Department: Chemistry
• Course: CHE 106
• Professor: W. Zheng

Document Summary

Wave peak and trough: think of the ripples of water. Wave lengths are characterized by their length and frequency: Frequency is expressed in hertz (hz or /s or s^-1) Blackbody effect: emission of light from hot objects. Photoelectric effect: emission of electrons from metal surfaces. Emission spectra: emission of light from electronically excited gas. When solids are heated they emit radiation (heat: wavelength distribution corresponds to temperature, ex. Help understand how electromagnetic radiation interacts with atoms. Planck derived quantums: fixed amount of smallest quantity of energy that can be released/absorbed through electromagnetic radiation: e=hv (h= planck constant: 6. 626 x 10^-34, v= frequency) used for energy of single quantum, matter absorbed in whole numbers (ex. Hv, 2hv, 3hv : quantized: energies are restricted to specific amounts, quantized energy is like stepping on stairs not between stairs. Spectrum: produced when radiation from a polychromatic source is separated into its component wavelengths; produces a continuous range of colors.