What Is the pH Scale? — Definition & Overview - Expii

The pH scale is used to measure how acidic or basic a substance is. The pH of an acid is less than 7, and that of a base is greater than 7.

The pH Scale Video Tutorial & Practice

Definition of pH (video)

pH and pOH Scales - Concept, Chemistry

What Is pH and What Does It Measure?

Definition of pH (video)

The pH Scale Video Tutorial & Practice

What Is pH? — Definition & Overview - Expii

Science of Carpet Cleaning – The pH Scale

pH - Wikipedia

A Definition of pH: How Do You Read the pH Scale?

The pH Scale Chemistry for Non-Majors

The pH Scale - Woods Hole Oceanographic Institution

pH Scale U.S. Geological Survey