In Chemical Mystery #7, a can of Coca-Cola was observed to sink in one container of water and yet float in another! This trick made use of the fact that the density of water changes with temperature. See the video below.
Q: Does an unopened can of soda pop float or sink in water?
A: It depends!
See if you can figure out what is happening in this twist on the classic floating-and-sinking soda can experiment.
You can perform an orange to black chemistry demonstration using materials commonly found in stores. The reaction appears to be similar to the Old Nassau reaction, but uses greener reagents. This is a great demonstration to do around Halloween time.
Celebrating National Chemistry Week 2015: Chemistry Colors Our World
The October 2015 issue of the Journal of Chemical Education is now available online to subscribers. National Chemistry Week, a community-based annual event uniting ACS local sections, businesses, schools, and individuals in communicating the value of chemistry in our everyday life, is being celebrated October 18–24, 2015 with the theme “Chemistry Colors Our World”. Articles in this issue can help you make the most of this annual celebration.
Using Models and Modeling To Teach
The August 2015 issue of the Journal of Chemical Education is now available online to subscribers. This issue includes articles on modeling instruction; Lewis dot structure model; molecular models; using models to teach crystal symmetry; introductory activities and labs; organic chemistry investigations and tools for engagement; enabling chemistry training for low vision or blind students; chemical education research in the literature; celebrating the work of Melanie Cooper; forensic chemistry articles from past issues.
Teaching the Relevance of Chemistry
The May 2015 issue of the Journal of Chemical Education is now available online to subscribers at http://pubs.acs.org/toc/jceda8/92/5. This issue includes articles on drugs & pharmaceuticals; health; food; plants; exploring viscosity; new approaches to teaching organic chemistry; computer-assisted learning; scents & flavors.
“On the third day of Christmas, my mailman brought to me… three gardening catalogs.” Jumping the gun? Or marketing genius? The doldrums after the holiday were a perfect time for these pages with their promise of spring. Their arrival kicked off an evening of grand plans. Somewhere along the line, chemistry crept in.
You’ve heard the old saying, “A picture is worth a thousand words.” How many words for a smell? A single whiff of a familiar scent can whisk me back into the past. Wash my hands with Dove soap—I find myself standing in my grandmother’s house. Walk by someone wearing Eternity cologne—I’m back in high school with an old boyfriend. Spray out a foamy mound of Barbasol shaving cream—I’m standing at an exhibit booth talking about the Journal of Chemical Education (JCE). That was a fragrant flashback moment I had last month. As I followed my nose to the past, it led me to a solution for the present.
National Chemistry Week this October 19–25 offers a chance to take a trip to the candy shop with the theme "The Sweet Side of Chemistry—Candy." Looking for some tasty chemistry resources? Two upcoming webinars will help you stock up.