Tag: Intermolecular Forces

It’s My Favorite Time of the Year! Chapters 6 and 7

It’s my favorite time of the year. Finally, we get to do chemistry in organic chemistry! Not to malign BDE, IMF, chair vs. boat conformations, etc., but I have always thought of the stuff leading up to this point—strains and conformers, the designation of stereochemistry and the terms and rules associated with their nomenclature—a bit

Read More

Mechanisms in Class, Mechanisms in Lab

I have always used a mechanistic approach when teaching organic chemistry. Every class I have taught, I started the first day saying, “Do you want to try to memorize hundreds, if not thousands, of individual reactions, or do you want to learn to understand how about ten reactions take place, so you can apply them

Read More

Teaching Solvent Effects Early Helps Keep Students’ Heads From Spinning

We started Chapter 9 in class a couple weeks ago, where we learn how to predict the outcome of the SN1/SN2/E1/E2 competition. Similar to how it’s done in most books, we do this by first learning about the major factors that influence the rate of each reaction in this competition. But unlike other books, this

Read More

MCAT-2015 is Here

The new year traditionally brings a time for both reflection and looking forward. For teachers of organic chemistry everywhere, this past year stands out more than most. After years of planning, MCAT-2015 is finally upon us. I previously wrote about the challenges and opportunities this change holds for us and how we, at Middlebury College,

Read More

No Longer Dreading the Second Exam

Shortly after I began teaching, when I was still using a book organized by functional group, I came to dread the second exam of the first semester. The class would typically perform decently well on the first exam, but scores would plummet on the second one. I recently looked back at my records for a

Read More

Solving the IR Puzzle

My three year old son recently has shown interest in solving puzzles. He dumps the pieces on the floor and randomly clicks them together until he finds a match. This is often the same approach that students take to problem solving in organic chemistry. To help my students work more systematically, I introduce IR early

Read More

Intermolecular Attractions and Solubility: A Classroom Demonstration For A Difficult Topic

An understanding of solubility, melting points, and boiling points based on intermolecular attractions, or intermolecular forces (IMF), is critical in academic research as well as industrial work. For example, I know that the following facts: Methylene chloride is a better solvent for the extraction of the products of LAH reductions than diethyl ether. Stearic acid

Read More

What Role Should the Organic Textbook Play in Helping Students Transition From General Chemistry?

Early in my teaching career I realized that a large percentage of my organic chemistry students weren’t carrying forward nearly as much from their general chemistry course as I had expected. This is a potentially enormous problem because without command of, and the ability to apply, several concepts from general chemistry, students will find it

Read More