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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.

An Activity to Demonstrate the Principles of Chemical Kinetics and Equilibria

A classroom activity to demonstrate the principles of chemical kinetics and equilibria and the utility of the mole concept is described here. The activity involved no hazardous materials or complex equipment and can be enjoyed and appreciated by general studies students as well as chemistry majors.

Time required: 

30 - 45 minutes of class time

 

Summer Reading/Book Review: Four Laws That Drive The Universe, by Peter Atkins

In a previous blog post, I shared a book Chemistry: A Very Short Introduction, by Dr. Peter Atkins. For my summer reading I wanted to get back to reading some chemistry non-fiction. I did, however, diverge from my original plan to read Eric Scerri's The Periodic Table: It's story and significance. Instead. "Four Laws That Drive the Universe" (with an alternative title of The Laws of Thermodynamics: A Very Short Introduction) became my next book as I so thoroughly enjoyed the writing style of Peter Atkins. The Kindle Version is only $6.15 and worth every penny in my opinion.

Build Your Own Hoffman Apparatus

Chad Hustings blogged this past school year about building his own Hoffman apparatus for each group of students. I have been using a Hoffman apparatus that had been purchased by my district before I began teaching there over 20 years ago to demonstrate electrolysis of water, but providing each student group with the ability to perform an electrolysis themselves is a powerful activity. I have used a different version of a homemade Hoffman apparatus, but after reading Chad's blog post, I decided to use a version close to his.  

Time required: 

If the Hoffman apparatus is built ahead of time (this takes about 5 minutes for each one if the teacher builds them), then the activity and discussion should take less than a 45 minute period.  

Great Science Geek Gear

Megan was watching a show about Nicola Tesla. She was so impressed that afterwards she decided Nicola needed an "emblem". She made one, put it on her Etsy site and the rest is history. The response was great and an idea was born. Nicola was the first of many emblems.  Megan said she is not sure if she is a nerd who loves art or an artist who embraced her inner geek. Either way, her stickers, posters, t-shirts, flashcards and designs are super cool.

CHEMED 2017

ChemEd X is preparing for CHEMED 2017! If you are attending the conference, we hope you will stop by our booth in the exhibit hall and introduce yourself.

JCE 94.07 July 2017 Issue Highlights

Encouraging and Supporting Community of Effort

The July 2017 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: artificial photosynthesis; developing laboratory skills through technology; using videos to enhance learning; smartphones in the laboratory; 3D printing as a teaching resource; exploring and understanding structure; making chemistry connections; research on inquiry; from the archives: elephant's toothpaste.

DIY Vapor Catalyzed Chemiluminescence

I recently watched a video in which a chemist (who goes by the nickname “NurdRage”) activated a chemiluminescent reaction by vapor deposition. I wanted to try it out for myself! Unfortunately, oxalyl chloride is toxic, corrosive, and a lachrymator. Thus, the experiment conducted by NurdRage needs to be conducted in a hood, and it is not particularly amenable to simple presentations. I began to wonder how I could create this vapor activated chemiluminescence using simple materials.

Nerdy Science Shirt Friday

Over the past 30 years, numerous articles have been written about the importance of student teacher relationships. The National Education Association, NEA, offers advice for beginning teachers that includes establishing the classroom climate, conducting class efficiently, and reaching all students. When teachers effectively connect to their students, discipline problems decrease and student engagement increases.

This post was submitted for the 2017 ChemEd X Call for Contributions: Creating a Classroom Culture.

Soap Making

My first year teaching chemistry, I was looking for a soap-making lab or activity that I could run in my chemistry class with 25-30 students working at the same time. I usually do this activity right before spring break, as it provides enough time for the soap to harden and cure (high school students are impatient to use their soaps right away, which you should not do with cold process soap). I have used the activity at different points in the curriculum: during intermolecular forces, during acids and bases, and during stoichiometry. Although I know teachers who use soap making as a project during their stoichiometry unit, I chose to not emphasize the calculations as it would require more time than I have available. Simply making the soap easily fits in a 45-minute period.

Time required: 

45 minutes to just make the soap. Discussion of key concepts may take another class period.