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!
intermolecular forces
Models of Chlorinated Hydrocarbons and Dipoles
Dean Campbell | Fri, 01/10/2025 - 21:51
Explore chlorinated hydrocarbons and dipoles with paper and toy models like LEGO, K’Nex, and Lux Blox! Paper models reinforce molecule polarity lessons, with templates and assignments included in the Supporting Information.
The Diamonds of Winter
Tom Kuntzleman | Thu, 01/09/2025 - 09:44
Take a walk and explore the chemical winter wonderland of snowflakes...and diamonds!
The Chemistry of Water Reveal Coloring Books
Tom Kuntzleman | Tue, 07/16/2024 - 07:01
How do Melissa & Doug’s “Water WOW!” Water Reveal coloring books work? Let's do some experiments to find out!
I Lava Particulate Models
Melissa Hemling | Tue, 05/21/2024 - 14:59
Use the classic Lava Lamp Lab to make the concept of intermolecular forces more accessible!
Exploring Color Separation in Salting-Out Experiments
Tom Kuntzleman | Sat, 05/04/2024 - 07:44
Adding dyes to salting out experiments can create a variety of interesting color effects as the dyes differentially dissolve in the aqueous and organic layers. Can this differential solubility of dyes be explained using intermolecular forces as a guide?
Intermolecular Forces Lab Practical
Hannah Nandor | Thu, 01/25/2024 - 10:08
This lab assessment is a wet lab that has students use lab skills to demonstrate their knowledge of polarity, Lewis structures, solubility, and intermolecular forces by justifying the polarity of given compounds.
Refresh and Reinforce: Water Maze Challenge Brain Break Activity
Melissa Hemling | Mon, 09/18/2023 - 08:42
Brain Breaks are powerful tools in education, supported by research showing improved focus, retention, community building, and reduced stress among students. When structured using chemistry principles, like in the Water Maze Race, brain breaks can also introduce or reinforce fundamental chemistry concepts.
The Salting-Out Effect: A Colorful Demonstration That Leads to Student - Teacher Activities
Jim Webb | Wed, 04/26/2023 - 20:53
Have you seen the "salting-out effect"? This interesting demonstration shows a separation of two layers in a solution of water and an organic solvent by adding an ionic salt. Although this concept has important applications in organic chemistry and biochemistry, it can also be visually stunning and engaging for audiences. Read on to learn how to incorporate this demonstration into your chemistry lessons.
Simple, Quick, and Accurate Determination of the Heat of Vaporization of Water
Michael Jansen | Mon, 04/10/2023 - 11:31
This activity allows for the simple and accurate determination of the heat of vaporization, ΔHvap, of water at 100°C, and ultimately the approximate strength of a hydrogen bond in boiling water, in kJ·mol–1.