JCE ChemEd Xchange provides a place for sharing information and opinions. Currently, articles, blogs and reading lists from ChemEd X contributors are listed below. We plan to include other items that the community wishes to share through their contributions to ChemEd X.

Solution to Chemical Mystery #3: The Sour Side of Chemistry!

Congratulations to Grazyna Zreda who solved the Chemical Mystery of the Mentos candies! To conduct this trick, two white Mentos candies are placed in separate beakers that both contain universal indicator. One of the Mentos candies turns the indicator slightly green, indicating the presence of base.

Oxidation of diphenylmethanol to benzophenone

I'm looking for a reliable procedure for an undergraduate organic lab experiment: oxidation of diphenylmethanol to benzophenone.  I am updating our lab experiments and was thinking about introducing phase transfer catalysis, linked to a 2-step Grignard synthesis ( bromobenzene --> phenylmagnesium bromide  -->  diphenylmethanol  --> benzophenone).  I have found a JChem Ed paper that sug

Shelly's Sharing . . .

Shelly Belleau is a chemistry and physics teacher from the Denver metro area.  This school year she is working as a teacher on special assignment at the University of Coloroado, Boulder.  Shelly anaitcipates returning to the high school classroom next fall.  Below is our coversation about inquiry.

1.  How do you define inquiry? or What does inquiry look like to you?

Making Measurement Meaningful or Why to Avoid Saying "Sig Figs" in Class.

Gluging in Class

Every year when the day came to discuss the rules for significant figures in measurements with my classes I would write the rules on the board, we’d work through a couple examples, and I’d try to find a way to explain why we needed to use them when reporting measurements.  This has never been my favorite topic to teach, mostly because I had a difficult time helping students see why these rules for measurement and reporting uncertainty were important.

Cautious Chemistry Corner #2: Methyl Alcohol Again

Another chemistry demonstration accident has happened. This one was at a museum in Nevada. In preliminary reports, it looks as if several children were injured. One child was held overnight in the hospital. See the article posted on Yahoo News. (Thanks to Tom Kuntzleman for the link.)