Learners view animations showing methods of measuring the pH level of a solution using litmus paper and electronic instruments.
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.
By Joan Kornitz
Students read different definitions of "acids" and "bases." In an interactive exercise, they identify if a substance is an acid or a base.
By Jill Larson