Category Archives: Post-lecture

Protecting Your Eyes During Next Week’s Eclipse and Beyond

What’s so special about the sunlight during an eclipse? Isn’t it the same old sunlight we see the rest of the time? Yes, it is, but because the event is so interesting to look at, and because the normally blinding solar … finish reading Protecting Your Eyes During Next Week’s Eclipse and Beyond

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SN2 Reaction Animation

Predicting the outcome of an “opposite side attack” SN2 reaction can be confusing at first, but animations can help. Check out the SN2 animation at chemtube3D.com. To operate the animation, find the drawing of the chemical reaction and click on … finish reading SN2 Reaction Animation

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Vaux Swift Watch 2016

This post has nothing to do with o chem, but you have a long weekend ahead of you and I don’t want you miss something really special: the swarming and roosting of 5000+ small Vaux swifts in the Chapman School … finish reading Vaux Swift Watch 2016

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Combination Coupling in Salicylic Acid 1H NMR

The reading of Exp’t 4 (salicylic acid) lab reports informed me that many 201 students struggled with the complexities of the proton NMR spectrum. The NMR of salicylic acid is complicated, no doubt about it, but it can be understood … finish reading Combination Coupling in Salicylic Acid 1H NMR

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Optical Activity of Sucrose: Laptop + Sunglasses

The web is loaded with videos explaining optical activity and demonstrating polarimeters of various types (see Sorrell, Fig. 4.3, p. 114). Here are two SHORT clever videos from David Whyte (and his cheeky daughter?): Home made polarimeter. Modern computer displays … finish reading Optical Activity of Sucrose: Laptop + Sunglasses

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Dogs Teaching Chemistry

Some of you may be planning a review of Chem 201 concepts before you take up the new challenges of Chem 202. Here are two short videos that review atomic structure and chemical bonding (note: this material is being taught … finish reading Dogs Teaching Chemistry

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Some tips for Exam 3

As you prepare for Exam 3, make sure that you learn to quickly identify the roles that different molecules might play in a chemical reaction. The sooner you can decide that a molecule is probably an acid (or base, nucleophile, … finish reading Some tips for Exam 3

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Atomic Force Microscope Takes Pictures of Chemical Bonds

Atomic force microscopy (AFM) is a imaging technique that works on a completely different principle from optical microscopes. Instead of magnifying light waves, an AFM device passes a needle-like probe over a surface and constructs an image of the surface … finish reading Atomic Force Microscope Takes Pictures of Chemical Bonds

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Molecular Modeling Activity Collection

Here are links to all of the molecular modeling activities we have done in class (these links also can be found on the Classes page). Activity #1 – Build/sketch models with Spartan ’14 Activity #2 – Potential maps, intermolecular interactions, … finish reading Molecular Modeling Activity Collection

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Bring your model kit to class next week

We are going to be building 5- and 6-carbon rings in class next week. I don’t have enough atoms in my bucket for more than a couple of rings so please bring your own. The model kits that we used … finish reading Bring your model kit to class next week

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