1. Wavelength, Energy Frequency Calculations

2. Lesson Sequence Evaluate: Warm-Up
Explain: Energy, Wavelength, Frequency Calculations
Elaborate: Calculation Practice
Explore/Explain: Flame Test Lab Data Table
Evaluate: Exit Ticket

3. Warm-Up
True or False: All elements have the same emission line spectra and so emit the same color
Write the 2 equations we learned yesterday. Label each variable in both equations

4. Objective Today I will be able to:
Correctly calculate the wavelength, energy and frequency of light emitted from an atom.
Design a proper data table for the flame test lab.

5. Homework
Finish Calculations Practice

6. Agenda
Warm-Up
Emission Spectra lab
Calculation Practice
Exit Ticket

7. Rotate from Station to Station to observe line spectrum of different elements and complete the lab.
Emission Spectrum Lab

8. Investigative Question
What is the relationship between energy, wavelength and frequency?

9. Energy, Wavelength, Frequency Calculation Notes

10. Electromagnetic Spectrum

11. Calculating Wavelength and Frequency
C= 3.0 x 108 m/s (speed of light)
λ = wavelength (meters)
ν = frequency (Hertz or 1/seconds)

12. Calculating Energy and Frequency
Planck came up with the equation
E= hν
E = Energy (Joules)
h = Planck’s Constant
6.626 x J*s
ν = frequency (Hertz or 1/seconds)

13. Calculation Examples

14. Energy, Wavelength, Frequency Practice
Complete the practice at your desk. Ask Mr. Klotz for help if you have questions.

15. Exit Ticket
Which problem on the practice worksheet did you find to be the most challenging?