Grinding solid colorless phenolphthalein indicator and solid colorless magnesium hydroxide base can produce a reaction that causes the mixture to turn pink.
Discover how a simple brain break activity, involving water balloon tosses, creatively reinforces the principles of Brønsted-Lowry acids and bases, making chemistry engaging and accessible for students.
Examine the properties of alkaline water with your students.
This short article unpacks recent research on sulfonphthalein behavior in aqueous solutions, shedding light on pH-dependent structures with the hope of equipping educators with up-to-date interpretations of very familiar experimental observations, such as color changes in acid/base titrations.
The connections between Acid-Base and Redox reactions already exist. How so? Let's find out.
Discover the secrets behind flame-shaped highlighter markings that not only disappear and reappear but also glow and flicker under the influence of acids, bases, and UV lights.
Josh Kenney shares three simple and inexpensive demonstrations using Elmer’s glue.
The color of a thermochromic system depends on its temperature. The colors of leuco dye-based systems can also be influenced by adding acids or bases to the thermochromic reactions. These can be used to create colorful demonstrations of acid-base chemistry. Thermochromism found in color changing cups can also be used to visualize heat flow, and therefore thermodynamic principles, associated with stretching and contracting elastomers.
The candy "Toxic Waste" and "Pop Rocks" are fun ways to show changes in acid base indicators. There is also an easy way to test car exhaust with an indicator.
Dean Campbell tries to use at least one demo for every class to illustrate concepts described in his chemistry courses. In this post, he includes short descriptions of the demonstrations and props he has used while teaching his collegiate General Chemistry II courses.
