What is the pH scale. What does it measure. Check out a few examples with a diagram. Learn its equation, colors, and its importance in science.

Sep 30, 2020 · The pH scale shows how acidic or alkaline (basic) a chemical is in water. See a chart of the pH of common chemicals and learn what pH means.

Interactive pH scale chart with examples, colors, and detailed explanations. Perfect for students and educators learning about acidity and alkalinity.

Nov 7, 2025 · The pH scale measures how acidic or basic (alkaline) a substance is. It ranges from 0 to 14. A pH of 7 is neutral. Values below 7 are acidic, and values above 7 are basic. Pure water has a …

The pH and pOH scales represent concentrations of [H 3 O +] and OH −, respectively. The pH and pOH values of some common substances at standard temperature (25 °C) are shown in this chart.

View the pH scale and learn about acids, bases, including examples and testing materials.

This activity is designed for students to identify the pH level of compounds. By testing substances, they will understand how the pH determines why a compound reacts with other substances and for what …

pH is a logarithmic scale. A solution that has a pH of 1.0 has 10 times the [H +] as a solution with a pH of 2.0, which in turn has 10 times the [H +] as a solution with a pH of 3.0 and so forth.

Explore the pH scale with this interactive tool from the American Chemical Society, understanding acidity and basicity in various substances.

Explore the meaning of pH and how it relates to acidity and basicity. Learn how to calculate pH, pOH, [H₃O⁺], and [OH⁻], and understand what pH tells you about a solution.