acids/bases

Lesson to determine the relationships between acid strength, Ka, pH, Molarity, and percent ionization

Kristen Drury | Tue, 05/18/2021 - 06:26

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After teaching the concepts and calculations for acid and base strength, concentration, percent ionization, and pH I noticed many of my students were struggling to make meaningful connections between these calculations.This lesson was created to strengthen the understanding of the relationships between these concepts and skills.

Dust Off Your Molecule Kits!

Melissa Hemling | Thu, 03/18/2021 - 18:54

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Many of us have molecular kits we only use once a year. Dust them off and find new lessons to use them in!

Stoichiometry - A Free Virtual Chemistry Lab Activity

Josh Kenney | Tue, 12/15/2020 - 09:38

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In this virtual activity, a video introduces stoichiometry and guides students to think conceptually using a simple baking analogy. Afterward, stoichiometry calculations connect to the analogy, that are then reinforced with a simple experiment. Finally, students explore a PhET simulation to deepen their knowledge.

Color Changing Coke and Mentos

Tom Kuntzleman | Wed, 09/02/2020 - 03:07

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What's a better way to start the new school year than with some new experiments? Learn how to use a variety of color changing experiments to teach students about the Diet Coke and Mentos experiment, acids, bases, chemical and physical changes, and climate change.

POGIL Activites in an Asynchronous Learning Environment

Stephanie O'Brien | Sun, 04/19/2020 - 12:46

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While POGIL^Ⓡ Activities are designed to be completed synchronously in a collaborative team setting with the teacher present as the facilitator, there are ways to utilize the activities in an asynchronous online setting.

Berries are red, berries are blue…I’ve got a berry surprise for you!

Tom Kuntzleman | Sun, 01/26/2020 - 14:03

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I observe a red to blue color change when I rinse my bowl after eating frozen blueberries. Sounds like an acid-base reaction, doesn’t it? Well, read on to learn about the blueberry surprise!

Solution to Chemical Mystery #16: A Red, White, and Blue Chemistry Trick for You!

Tom Kuntzleman | Wed, 06/12/2019 - 13:37

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The solution to "Chemical Mystery #16: A Red, White, and Blue Chemistry Trick for You!" is presented. How this experiment can be used as a springboard to carry out a simple quantitative analysis of salt solubility is also discussed.

Chemical Mystery #16: A Red, White, and Blue Chemistry Trick for You!

Tom Kuntzleman | Sun, 06/09/2019 - 13:43

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Watch this video and see if you can figure out how red, white, and blue colors can all be made from the same chemical solution!

Indicator Activity - Assigning Roles for Students in the Laboratory

Karen Perri | Sun, 04/07/2019 - 12:09

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The author explains how she assigns roles for her students while completing laboratory work. The lab activity is designed to allow students to explore the use of indicators. It serves as an introduction to acids, bases and pH.

Solution to Chemical Mystery #14: Loves Me...Loves Me Not

Tom Kuntzleman | Wed, 02/27/2019 - 12:37

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Did you figure out how the experiment in Chemical Mystery #14 was performed? The solution is presented here!