Sub-topic 7.1 Lesson 1 - The Atomic Model

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Topic 7.1 Lesson 1 - The Atomic Model

Textbook References: Tsokos (6th Edition) pp 295 -297

Syllabus Outcomes Covered In This Lesson:

Understandings:

Discrete energy and discrete energy levels

Transitions between energy levels

Applications & Skills:

Describing the emission and absorption spectrum of common gases

Solving problems involving atomic spectra, including calculating thewavelength of photons emitted during atomic transitions

STARTER: Watch this video on the Geiger-Marsden Experiment. Write down some of the main findings of this experiment. (5 mins) Main Activities:

Task #1: Complete this Task Sheet on Atomic Models Investigation. Requires the use of PhET sims : Models of the Hydrogen Atom & Rutherford Scattering (25 mins)

Task #2: Watch this Video on Energy Levels in Atoms. (10 mins)

Task #3: Complete this Data Sheet while completing this Set of Instructions for the Eduweblabs Investigation on Bright Line Spectra of Sodium (15 mins).

Plenary: Answer this Question on Discrete Energy Levels. (5 mins) Homework: Attempt the questions on this Worksheet on Energy Levels. Show ALL working.