high school

The Salting-Out Effect: A Colorful Demonstration That Leads to Student - Teacher Activities

Jim Webb | Wed, 04/26/2023 - 20:53

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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.

ChemEd 2023 - Calling All Chemistry Teachers

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ChemEd 2023 will be hosted by Guelph University in Ontario, Canada July 23 - 27, 2023! REGISTRATION is now OPEN! Make your summer plans for professional development now!

Solutions Interactive Notebook

Nora Walsh | Tue, 04/18/2023 - 15:54

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Nora Walsh outlines the interactive notebook pages she uses for her unit on Solutions. All of the documents and foldables are available for download.

Colourful Chemistry of Canning – Part 3

Iain Smellie | Thu, 04/13/2023 - 13:38

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Part 3 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. These recent studies have focused on the reaction of tinplate cans with iodine.

Simple, Quick, and Accurate Determination of the Heat of Vaporization of Water

Michael Jansen | Mon, 04/10/2023 - 11:31

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This activity allows for the simple and accurate determination of the heat of vaporization, ΔH_vap, of water at 100°C, and ultimately the approximate strength of a hydrogen bond in boiling water, in kJ·mol^–1.

Making Natural Acid Base Indicators

Ariel Serkin | Wed, 04/05/2023 - 10:22

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Ariel Serkin shares an activity she has explored using natural acid base indicators with her food chemistry elective students.

New POGIL Activities for AP Chemistry with Laura Trout

Deanna Cullen | Mon, 04/03/2023 - 13:14

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The new edition of “POGIL Activities for AP Chemistry” is on track to be released next winter. Laura Trout offered a sneak peak of the new activities and improvements that have been incorporated into the new edition in our March 27, 2023 ChemEd X Talk. Watch the recording of the presentation!

Algae Connections to Chemistry Classrooms

Dean Campbell | Fri, 03/31/2023 - 09:55

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This timely post is a perfect fit for the theme of Chemists Celebrate Earth Week 2023! Algae is a rich topic with many possible connections to the chemistry classroom. Algae needs to take in light, carbon dioxide, and various simple nutrients and, though it can sometimes get out of control, can produce oxygen, diatomaceous earth, and other products. It can even fluoresce pink!