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## Hydrogen Atom Game Post-test

 Speed Formula c = λf Planck’s Formula E = hf Speed of Light (c) 3.00 × 108 m/s Planck’s Constant (h) 6.626 × 10-34 J· s 1 electron volt (eV) = 1.602 × 10-19 J 1 m = 1 × 109 nm 1 m = 1 × 106 µm

Answer the following questions to the best of your ability. You will receive a grade for completing this page but your score will only be used for information about what you may have learned from playing the game. Incomplete papers will earn a grade that reflects the degree of incompleteness. Complete papers will receive a 100. You may use a calculator. All necessary formulas and constants have been provided. Show all work!

1. What is the frequency in hertz (Hz) of light that has an energy per photon of 2.12 × 10-18 J?
1. What is the wavelength in meters (m) of light that has a frequency of 4.57 × 1014 Hz?
2. How many joules (J) equals the
energy of 13.062 eV?
3. How many electron volts (eV) is
equal to 1.82 × 10-19 J?

1. What is the wavelength of light that has an energy per photon of 10.205 eV?
2. How many nanometers (nm) is equal
to 4.34 × 10-7 m?
3. In one or more complete sentences describe what happens when an electron moves from a higher energy level to a lower energy level.

1. In one or more complete sentences describe what is required for an electron to move from a lower energy level to a higher energy level.

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1. Draw a picture showing emission of light due to a transition between energy levels 5 and 2 using the energy-level diagram shown at left. Draw and label the electron and the photon in your picture.
1. Draw a picture showing absorption of light that causes and transition between energy levels 3 and 1 using the energy-level diagram shown at left. Draw and label the electron and the photon in your picture.

1. How much energy (in electron volts, eV) is released or absorbed when an electron moves from energy level 2 to energy level 5? Energy level 2 is at -3.402 eV and energy level 5 is at -0.544 eV.
2. What is the relationship between the color of a line in an atomic emission spectrum and what is happening inside the atoms?
Examples for the calculations required in this game
Rules for Referees
Score Sheet
Backs of Playing Cards
Playing Cards Page 1
Playing Cards Page 2
Playing Cards Page 3
Playing Cards Page 4
Hydrogen Atom Energy Level Diagram Playing Board
Emission and Absorption Spectra page
Pre-test
Last updated: May 04, 2009        Home