The Density Bottle is Red, the Density Bottle is Blue...
Tom Kuntzleman | Fri, 05/30/2025 - 10:10
You're going to love this new color variation on the Density Bottle experiment!
high school chemistry
Not so Green Up Close: a Peek at a dyed Chicago River Sample
Dean Campbell | Sat, 05/17/2025 - 22:36
Light absorbance and fluorescence were studied for a sample of the Chicago River that had been dyed green for St. Patrick’s Day. The sample had weak green fluorescence, showing that the intense green appearance of the river was in part due to the long path length of light through the water. The ability of the green color to partition into 1-octanol was also explored.
How to Effectively Use "Write This, Not That" for AP Chemistry Review
Nora Walsh | Sun, 04/20/2025 - 10:46
AP teacher and exam reader, Nora Walsh, shares tips on how to help your students answer AP Chemistry free-response questions. She provides examples, references, and rationale for her suggestions.
Resources for an AP Chemistry Exam Review
Nora Walsh | Wed, 04/16/2025 - 00:00
Check out these curated resources to help you plan for your AP Chemistry Review!
Join Us at ChemEd 2025
Sarah English | Tue, 04/15/2025 - 20:47
Join us at ChemEd 2025 this July at the Colorado School of Mines. Check out this post to learn about all the exciting opportunities!
Glacier-Related Demonstrations for Chemistry Classrooms
Dean Campbell | Thu, 04/10/2025 - 13:45
Short descriptions of demonstrations that can be connected to glaciers. Many of these examples are suitable for use in high school and collegiate General Chemistry courses and other courses such as Environmental Chemistry.
Elevating the Coke and Mentos Experiment
Tom Kuntzleman | Mon, 04/07/2025 - 13:45
Ryan Johnson and I took a trip to the top of Pikes Peak to study the Coke and Mentos experiment. And we had a few surprises along the way...
Student Learning vs. Student Earning
Kevin Morse | Fri, 03/21/2025 - 07:27
In this post, Kevin Morse outlines an easy-to-implement procedure to help students reflect on teacher feedback for improved understanding.
Egg-lectrons and McLewis Structures
Dean Campbell | Fri, 02/28/2025 - 22:13
Egg cartons and beverage holders can be used as models of atoms, with their dimples representing orbitals. Each dimple can hold up to two objects such as milk jug caps, plastic eggs, and cup pieces to represent electrons in the orbitals. Partially overlapping the trays by stacking the dimples represents chemical bonding and produces molecular models resembling Lewis structures. The models can be easily made from materials that can be readily found grocery stores and fast-food restaurants.
UNO OUT…..Demystifying Stoichiometry
Nina Hike | Tue, 02/25/2025 - 14:57
This article describes a game aimed at helping students become comfortable using dimensional analysis. Designed to mimic the popular card game UNO, MOLE-O encourages students to think about how to set up a stoichiometry problem utilizing a deck of UNO-like playing cards.