PHET Interactive Simulations: PH Scale Basics
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.
Sample Learning Goals
Determine if a solution is acidic, basic or neutral
Place acids or bases in order of relative acidity or basicity
Relate liquid color to pH
Predict how solution volume or dilution with water will affect the pH of acids or bases