Sub-topic 7.2 Lesson 2 - Mass Defect & Binding Energy

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Sub-topic 7.2 Lesson 2 - Mass Defect & Binding Energy

Textbook References: Tsokos (6th Edition) pp ; Oxford Text: pp 284 - 289.

Syllabus Outcomes Covered In This Lesson:

Understandings:

Mass defect and nuclear binding energy

Applications & Skills:

Solving problems involving mass defect and binding energy

Solving problems involving the energy released in radioactive decay

Sketching and interpreting the general shape of the curve of average binding energy per nucleon against nucleon

STARTER: Watch this short video and explain in your own words what you think is being depicted here. Share your ideas with the person sitting next to you. (3 mins) Main Activities: Task #1: Download & work through this PowerPoint on Mass Defect. Follow the worked examples carefully. (12 mins) Task #2: Watch this Short Video on Binding Energy per Nucleon. Describe (in one or two sentences only) the trend that is being shown here by the graph line. (3 mins)

Task #3: (i) Work on the problems in this worksheet - Mass Defect and Binding Energy Worksheet. SHOW WORKING FOR ALL PROBLEMS! (20 mins)

(ii) Swap your work with another student & peer mark your answers using this ANSWER KEY. (7 mins) EXTENSION: Nuclear Transformations and Binding Energy Factsheet. Download this document & read through it if you finish the problems worksheet early.

Plenary: Fill out this Exit Ticket and hand it to your teacher on the way out. (5 mins)