American Chemical Society
Middle School Chemistry: P H and Color Change
Students see a demonstration of a color change using universal pH indicator and then change the concentrations of an acid and a base using a universal indicator to test the pH of the resulting solutions. Through an animation, they see...
Khan Academy
Khan Academy: Biology: Water, Acids, and Bases: Acids, Bases, P H, and Buffers
Learn the basics of acids, bases, proton concentration, the pH scale, and buffers in this article.
![Cosi Columbus: Cabbage Patch Chemistry [Pdf] Activity](http://content.lessonplanet.com/resources/thumbnails/410122/large/bwluav9tywdpy2symdiwmduymc0ynde4oc0xzxmzchv6lmpwzw.jpg?1589985500 "Cosi Columbus: Cabbage Patch Chemistry [Pdf] Activity")
Center of Science and Industry
Cosi Columbus: Cabbage Patch Chemistry [Pdf]
Make your own indicator by using red cabbage leaves and common household items. Includes full list of materials, procedures, and scientific explanation of how to determine if a substance is acidic, basic, or neutral based on the colors...
Chem4kids
Chem4 Kids: Reactions: Names to Know
Acids and bases are scaled. These facts are good knowledge to have when classifying solutions as acidic, basic, or neutral.
Oklahoma State University
Oklahoma State University: Acid Base Overview
Beginning with the example of the hydrangea, this page gives a good overview of acid-base chemistry.