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!
inquiry-based discovery learning
Amount and rate of heat transfer using iron spheres and liquid nitrogen
Dean Campbell | Tue, 06/04/2024 - 11:00
When iron spheres at room temperature are added to liquid nitrogen, the nitrogen boils as heat is transferred in from the iron. The amount of liquid nitrogen boiled depends on the amount of heat transferred, which depends on the mass of the iron added. However, the rate at which liquid nitrogen boils depends on the surface area of the iron in contact with the liquid nitrogen. These phenomena can be studied with experiments which measure the mass lost by the boiling liquid nitrogen.
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?
Water You Thinking? Bringing the Chemistry and Biology of Water to Middle-Schoolers
Dean Campbell | Sun, 09/24/2023 - 10:18
Description of a Detroit Area Pre-College Engineering Program (DAPCEP) course for middle-school students about the chemistry and biology of water.
The Floating Soap Bubble
Tom Kuntzleman | Mon, 08/21/2023 - 09:03
The floating soap bubble is an impressive experiment that is surprisingly easy to carry out.
How Do Color Changing Marshmallows Work?
Tom Kuntzleman | Wed, 07/19/2023 - 12:10
With a little chemical investigation, you can figure out how Jet-Puffed's new color changing marshmallows work!
The Diet Coke And Mentos Reaction – Having A Literal Blast!
Yvonne Clifford | Mon, 01/16/2023 - 10:28
The Diet Coke and Mentos reaction is used as the basis for this hands on experiment. Students work in groups to research, test, and adapt as needed with the goal to get the highest possible geyser!
Colourful Chemistry of Canning – Part 2
Iain Smellie | Tue, 10/18/2022 - 17:06
Part 2 includes further anthocyanin experiments to make a connection between the food we eat and the chemical principles that are employed to ensure that canned foodstuffs can be preserved properly.
Effect of Temperature on the Whoosh Bottle
Tom Kuntzleman | Tue, 07/05/2022 - 13:45
Why does the "Whoosh Bottle" experiment behave differently at different temperatures?
Colourful Chemistry of Canning
Iain Smellie | Fri, 07/01/2022 - 07:56
Educators may be able to use these anthocyanin experiments to make a connection between the food we eat and the chemical principles that are employed to ensure that canned foodstuffs can be preserved properly.