How much energy does it take for an electron jump from chromium metal? Using a formula, the instructor describes the procedure for determining the wavelength of light needed for a specific metal to eject electrons. 

Concepts

photons, electrons, wavelength, the photoelectric effect

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Additional Tags

science

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Instructional Ideas

• Use a graphic organizer to record the formulas with descriptions of the variables and units

Classroom Considerations

• Using the YouTube video requires Internet access
• The explanation behind the formula used here was taught in previous lessons in this series
• The lesson continues a 14-part series

• This video is hosted on YouTube

Pros

• Explains the importance of unit conversions and using consistent units

Cons

• Begins with a complex example requiring unit conversions; it would be beneficial to begin with a simpler example to explain the formula