Acids, Bases, and pH

Learn about acids, bases, and pH, including definitions and calculation.

Acid-Base Basics

Beakers with solution on shelf in lab
Chris Ryan/Getty Images

Acids produce protons or the H+ ion while bases accept protons or generate OH-. Alternatively, acids may be viewed as electron pair acceptors and bases as electron pair donors. Here are ways of defining acids and bases, acids and bases and sample calculations.

pH Facts and Calculations

Scientific test
Ann Cutting/Getty Images

pH is a measure of the hydrogen ion (H+) concentration in an aqueous solution. Understanding pH can help you predict the properties of a solution, including the reactions it will complete. A pH of 7 is considered neutral pH. Lower pH values indication acidic solutions while higher pH values are assigned to alkaline or basic solutions.

Projects and Demonstrations

This is a flask of blue liquid.
Medioimages/Photodisc/Getty Images

There are many experiments, projects, and demonstrations you can do to examine acids, ​bases, and pH. Many color-change reactions involve acids and bases, including some clock reactions and disappearing ink.

Quiz Yourself

Science lab workers
sanjeri/Getty Images

These multiple choice quizzes test how well you understand acids, bases, and pH.