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.

In chemistry, pH (/ piːˈheɪtʃ / or / piːˈeɪtʃ /; pee-HAYCH or pee-AYCH) is a logarithmic scale used to specify the acidity or basicity of aqueous solutions. Acidic solutions (solutions with higher …

Aug 2, 2025 · What is pH? Learn the pH definition, scale, calculations, and uses in science, with examples, misconceptions, and FAQs.

Apr 20, 2023 · What is the pH and what does it mean? If a carbonated beverage has a pH = 3, how does it compare to a solution that has a pH = 6? Is it half as acidic? Twice as acidic? Or is …

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.

Solutions are classified as acidic or basic based on their hydrogen ion concentration relative to pure water. Acidic solutions have a higher H + concentration than water (greater than 1 × 10 7 …

Oct 11, 2025 · A pH value is the quantitative measure of the acidity or basicity of aqueous or other liquid solutions. The term, widely used in chemistry, biology, and agronomy, translates the …

This article explains the concept of pH, how to find and calculate the pH, and how the pH formula and pH equation are used in chemistry!

What is the pH Scale? 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 …

‪pH Scale: Basics‬.