Solution to Chemical Mystery #17: Bubble Buster!
Tom Kuntzleman | Wed, 04/29/2020 - 16:45
The solution to Chemical Mystery #17 is presented. Were you able to use your chemical knowledge to explain the results?
Equilibrium
A Multi-Colored Equilibrium Experiment
Tom Kuntzleman | Thu, 03/05/2020 - 18:35
Solutions of copper (II) dissolved in acetone are easy to prepare, and can display orange, yellow, green, and blue color depending upon conditions. Such solutions allow for a variety of demonstrations and experiments that illustrate principles of chemical equilibrium.
Why Green Chemistry? Or Better Yet, Why Not Green Chemistry?
Erika Fatura | Mon, 08/05/2019 - 22:50
My top 5 reasons for using Green Chemistry in my classroom along with a few examples of replacement labs that follow Green Chemistry principles.
Equilibrium Snowball Fight
Josh Kenney | Thu, 06/20/2019 - 12:08
For dynamic equilibrium, I like to use a physical analogy that pits students against each other in a classroom-wide “snowball” fight. Not only is this activity great for building students’ conceptualization of dynamic equilibrium, it is also really fun!
From JCE - A demonstration for challenging students' thinking on acid-base chemistry and equilibrium
Dan Meyers | Tue, 05/01/2018 - 08:29
I was drawn to an article by Eilks, Gulacar, and Sandoval about Acid-Base Chemistry and Chemical Equilibrium in the April 2018 issue of JCE. The title of the article is "Exploring the Mysterious Substances, X and Y: Challenging Students' Thinking on Acid-Base Chemistry and Chemical Equilibrium." The premise of the article is to demonstrate how an instructor may use a group of compounds (zeolites) to "elaborate on the behavior of solid state acids and bases" while revisiting LeChatelier's principle.
Moving Beyond Le Châtelier
Kaleb Underwood | Mon, 12/04/2017 - 11:09
Is it time for us as chemistry teachers to move beyond the Le Châtelier Principle as justification for why disturbances to equilibrium systems cause particular “shifts”? The author shares his new approach to teach equilibrium and provide his students with a more rigorous understanding of the concept.
An Activity to Demonstrate the Principles of Chemical Kinetics and Equilibria
George Parris | Fri, 08/04/2017 - 11:32
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.
Titration of an Esterification Reaction to Determine Equilibrium Constant
Lowell Thomson | Wed, 09/21/2016 - 08:44
This activity was submitted for a 2016 ChemEd X Call for Contributions soliciting input regarding the big ideas being put forth by organizations like AP. The author shares a lab activity that relies on connections - between stoichiometry, esterification, equilibrium, kinetics, titrations and uncertainty of calculations. He also shares the resources he created.
Equilibrium Lab
Lowell Thomson | Mon, 08/22/2016 - 16:23
Just this week I'm reviewing equilibrium with my IB Chemistry seniors after they finished some summer study on the topic. One of our classes was spent manipulating a classic equilibrium involving copper ions and a copper-chloride complex ion.