We discussed the properties of four types of crystalline solids, and the inter-particle forces that cause those properties.There will be an in-class assignment on Tuesday relating to this lesson.  Text references for this topic are p.268-273.
You have an assignment on Canadian Contributions to Atomic and Molecular Theory, due next Friday, October 1.  The assignment handout and one discussing how to gauge the quality of a website are on the unit 1 page of this site.
Homework:  Why do non-polar molecules make soft solids?;  p.264 #9, 11, 12;  p.266 #1-4



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