My Notes
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http://firstyear.chem.usyd.edu.au/iChem/lewis.shtml
A set of Flash-based, interactive tools for students to construct Lewis structures for electron deficient, octet rule obeying and hypervalent MLx molecules and ions (x = 2 - 6).
The user chooses the number of electrons and bond type (single, double or triple) and is steered towards the correct stucture.
For cases where resonance structures are possible, the user must construct each form to complete the puzzle.
A student should be able to draw Lewis structures for electron deficient, octet rule obeying and hypervalent molecules.
A student should be able to construct resonance structures where appropriate.
Self-learning tools for students to back up lectures.
Evaluation
Lewis structures are assessed via multiple choice quizzes.
Students requested additional molecules in the library.
I used this activity today in my general chemistry section of 18 students, all equipped with laptops. I had previously introduced drawing Lewis structures and used the molecules in the "obeying the octet rule" section of the website to provide extra practice. The students were attentive and seemed to enjoy it. The ones who worked faster went on and tried other molecules on their own. I had them all bookmark the page so that they could go back to it for further practice later on. If I had had more time to spend on the topic, I would have assigned pairs of students different molecules from the site to work on.
I went looking for this and it appears that the link is broken. But there is a lot of great materials - including and interactive Lewis structure program - at the U Sydney first year website. https://scilearn.sydney.edu.au/fychemistry/iChem/
In reply to I went looking for this and… by Barbara Reisner / James Madison University
This is a great resource for VSEPR too: https://phet.colorado.edu/en/simulation/molecule-shapes
Kyle