Learners view an animated presentation showing how the pH level of a cleaning solution is controlled in a closed-loop system in a manufacturing setting. A quiz completes the activity.

In this animated object, learners view hydrogen and hydroxide ions in a solution. A brief quiz on the basic principles of the term pH completes the activity.

Learners view animations showing methods of measuring the pH level of a solution using litmus paper and electronic instruments.

In this animated object, learners examine how changes in pH affect the salt bonds in strands of hair.