This week my students did the molecular model lab which is a bummer for them because we are one class period behind in lecture. So- if they didn't take the time to really read chapter 8 thoroughly before lab (most of them probably didn't) then the lab probably went in one ear and out the other.
I'm not sure if it makes more sense to try to explain ionic vs covalent bonding before or after Lewis structures/VSEPR shapes. By learning to use the Lewis Dot model students can predict shapes which influence the overall bonding characteristics of molecules. The larger concepts of ionic vs covalent bonding can be explained without knowledge of Lewis structures, however, the details seem much clearer once the model is explained.
Showing posts with label shapes. Show all posts
Showing posts with label shapes. Show all posts
Saturday, October 30, 2010
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