Test the pH of everyday liquids such as coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Investigate how adding more of a liquid or diluting with water affects pH.

Discover where solutions fall on the pH scale using this detailed pH chart.

Students investigate the pH level of household substances by testing a variety of common compounds. Substances are tested with pH strips and placed on the continuum of the pH scale range of 1 to 14. After testing a solution, the student...

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...

Beginning with the example of the hydrangea, this page gives a good overview of acid-base chemistry.