Chemistry The Bohr Model and Light Guided Inquiry Lesson

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1.76 MB   |   47 pages


The Bohr Model and Light Guided Inquiry Lesson
This is a student-centered, active learning lesson without lecture or notetaking!

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Texas Chemistry Standards (TEKS)
C.6.A: The student is expected to understand the experimental design and conclusions used in the development of modern atomic theory, including …. Bohr’s nuclear atom.
C.6.B: Understand the … the mathematical relationships between energy, frequency, and wavelength.
C.6.C: Calculate the…energy of light using Planck’s constant and the speed of light.
NOTE: This lesson uses the symbol “f” for frequency instead of “ν”, as this is the symbol used in the Texas STAAR Chemistry Reference Chart. In order to emphasize basic calculation proficiency, only the following units are used for light calculations: energy (J), wavelength (m), frequency (s-1), speed of light(m/s), Planck’s constant (J•s)

Lesson Summary:
This guided inquiry lesson enables students to construct their own understanding of the Bohr model of the atom, the relationship between light and atomic structure, and the mathematical relationships between frequency, wavelength, and energy. Students are able to actively learn the material without lecture or note taking.

Part 1: Atomic Emission Spectra
• Students observe the atomic emission spectra of several atoms and identify the elements in a mixture based on their atomic emission spectra.

• Students physically act out the electron of a hydrogen atom jumping to different energy levels and emitting different colors of light when it falls to lower energy levels. Students relate the results of this activity to hydrogen’s atomic emission spectrum.

Part 2: The Nature of Light
• Students compare six cards which each illustrate the energy, wavelength, frequency, and speed of light of different colors of light.

• Students determine how, or if, the energy, wavelength, frequency, and speed of light is different for different colors of light.

Part 3: Light Calculations
• Students learn how to calculate wavelength, frequency, and energy.

• Students practice and reinforce their understanding of light calculations by playing a board game called “Excite!”.

Student Study Sheet
Students are provided with student study sheets summarizing all of the important concepts and vocabulary in this lesson.


Learning Objectives (Bloom’s Revised Taxonomy):
Remembering: Identify and recognize the symbols and units for frequency, wavelength, and energy.
Understanding: Explain the following terms: energy level, atomic emission spectrum, wavelength, frequency, speed of light, energy, wave, photon, Planck’s constant
Applying: Relate the pattern of an element’s atomic emission spectrum to the structure of the atom.
Analyzing: Compare the relative size of the wavelength, frequency, and energy of different colors of light.
Calculate the frequency, wavelength, and energy of different colors of light.
Evaluating: Discuss the relationship between the energy of a photon and the movement of an electron between energy levels.


Included in this Download:
• Cover page (1 page)
• Guided inquiry lesson (12 pages)
• Handout (1 page)
• Colors of Light card set (3 pages)
• Game cards (20 pages)
• Answers to game cards (1 page)
• Game board (1 page)
• Student study sheets (2 pages)
• Teacher notes (3 pages)
• Guided inquiry lesson with suggested answers (12 pages)


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Total Pages
Answer Key
Teaching Duration
1 hour

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Chemistry The Bohr Model and Light Guided Inquiry Lesson
Chemistry The Bohr Model and Light Guided Inquiry Lesson
Chemistry The Bohr Model and Light Guided Inquiry Lesson
Chemistry The Bohr Model and Light Guided Inquiry Lesson