Chapter 3 Lecture Video Worksheet 1 PDF

Name: KSU ID: Chapter 3 Lecture Video Worksheet 1 Match the labeled portions of the diagram of a wave to the correct definitions. 1. Amplitude: 2. Wavelength: 3. Frequency: 4. If the wavelength of a photon of visible light i...

Name: KSU ID: Chapter 3 Lecture Video Worksheet 1 Match the labeled portions of the diagram of a wave to the correct definitions. 1. Amplitude: 2. Wavelength: 3. Frequency: 4. If the wavelength of a photon of visible light is 546 nm, what is its frequency (GHz)? GHz 5. A microwave gives off a photon with a wavelength of 8.73 cm. What is the energy (J) of that photon? J 6. 2 moles of photons have a total energy of 1.13 J. What is the frequency (Hz) of one photon? (1 mol =6.022 x 10^23 photons) Hz 7. Which early 20th century experiment or phenomenon specifically demonstrated light’s particle properties? a. Blackbody radiation b. The photoelectric effect c. Atomic emission spectra d. Diffraction of light e. All of the above demonstrate light’s particle properties f. None of the above demonstrate light’s particle properties 8. What is true about the Bohr model of the atom? a. Electrons absorb energy when falling to an orbit with a smaller radius b. Electrons orbit the nucleus in a circular orbit with a fixed radius c. Spacing of the energy levels are equal with increasing n values d. Spacing of the energy levels change with increasing n values e. None of the above is true 9. What is the frequency (Hz) of light absorbed when an electron in a hydrogen atom transitions from an orbital of n = 2 to n = 5? Hz 10. Match each line in the atomic absorption spectrum below to the most probable transition. n = 1 to n = 2: n = 1 to n = 3: n = 1 to n = 4: n = 1 to n = 5: n = 3 to n = 4: n = 2 to n = 3: 11. At the end of which transition(s) in the below diagram will the electron be closest to an energy of zero? 12. The de Broglie wavelengths of all objects can be calculated, but the dual wave-particle nature of matter only starts manifesting on a sufficiently small scale. What is the de Broglie wavelength (m) of a 144 g baseball thrown by a major league pitcher at 95.3 miles per hour? m 13. Photons do not have mass, but they do have momentum. What is the momentum (kg·m/s) of a photon with a wavelength of 638 nm? kg m/s 14. What is the energy (J) of the photon given off when an electron in a hydrogen atom falls from n=3 to n=1? J 15. What is the energy (kJ) of 6.75 moles of photons with a wavelength of 612 nm? (1 mol =6.022 x 10^23 photons) kJ