Oklahoma State University
Oklahoma State University: Acid Base Overview
Beginning with the example of the hydrangea, this page gives a good overview of acid-base chemistry.
CPALMS
Florida State University Cpalms: Florida Students: Cooking With Chef Ragu: Acids, Bases, & Salts
Learn what makes a substance an acid or a base. Learn how salts are formed.
US Geological Survey
U.s. Geological Survey: Water Science for Schools: Acid Rain
An introduction, aimed at upper elementary- and middle-school learners, to acid rain. [Click back to home to access the site in Spanish.]
Other
Johnson County Community College: P H Scale
Colorful chart of the pH scale, including example chemicals.
University of Illinois
University of Illinois Extension: Knowing Your World: Acid Precipitation
A brief article defining "acid precipitation," followed by directions for a hands-on demonstration which "show[s] the direct effect of acid water on plant growth."
TeachEngineering
Teach Engineering: Acid (And Base) Rainbows
Students are introduced to the differences between acids and bases and how to use indicators, such as pH paper and red cabbage juice, to distinguish between them.
CK-12 Foundation
Ck 12: Solutions, Acids and Bases
[Free Registration/Login may be required to access all resource tools.] Solutions, acids, and bases are the focus of this lesson. The use of the pH scale to identify acids and bases is covered as well.
Science4Fun
Science4 Fun: Acids and Bases
Resource discusses acids and bases, pH scale, and how harmful they are.
Science Education Resource Center at Carleton College
Serc: Investigating P H of Common Household Substances
Learners investigate the pH level of household substances by testing a variety of common compounds. Substances are tested with pH strips and placed on the continuum of the pH scale range of 1 to 14. After testing a solution, the student...
US Geological Survey
Us Geological Survey: Water Properties: P H
This resource explains what pH is and how it relates to water. The resource includes a colored graphic of the pH levels and a map of pH levels around the USA.
Sophia Learning
Sophia: P H Scale: Lesson 3
This lesson will introduce the concept of pH, acids and bases. It is 3 of 3 in the series titled "pH Scale."
Upper Canada District School Board
Tom Stretton's Advanced Placement Chemistry: Unit 13: Acids and Bases
This online textbook provides learners with advanced-level material on acids and bases.
Science Buddies
Science Buddies: Make Your Own P H Paper
In this "kitchen chemistry" project about acid/base chemistry, you will measure the acidity or alkalinity of a solution using a logarithmic scale called the pH scale. As you learn about the pH scale, you will have the chance to make your...
BBC
Bbc: Gcse Bitesize: Types of Chemical Reactions
Bases are substances that can react with acids and neutralize them. Alkalis are bases that are soluble in water. The pH scale measures how acidic or alkaline a substance is. Substances with a pH lower than 7 are acidic, those with a pH...
BBC
Bbc: Gcse Bitesize: Types of Chemical Reactions
This lesson focuses chemical reactions using acidic and alkaline solutions, the pH scale which measures the acidity or alkalinity of a solution, and how to use a pH meter. A link to an assessment is also provided.
Museum of Science
The P H Factor
This is a great source of chemistry experiments and information dealing with pH. Learning objectives are provided to explain the basis for each activity. Japanese and Chinese versions are also provided.
Chem4kids
Chem4 Kids: Reactions: Names to Know
Acids and bases are scaled. These facts are good knowledge to have when classifying solutions as acidic, basic, or neutral.
US Environmental Protection Agency
Epa: Measuring P H Experiment
This is an activity that deals with acid rain. "This experiment will illustrate how to measure the approximate pH of chemicals in water using a pH indicator." It is easy to follow the comprehensive set of directions.
US Environmental Protection Agency
Epa: Determining the P H of Common Substances
In this acid rain experiment the students will be "determining the pH of common substances." This is a great lesson plan for an experiment.
American Chemical Society
Middle School Chemistry: P H and Color Change
Students see a demonstration of a color change using universal pH indicator and then change the concentrations of an acid and a base using a universal indicator to test the pH of the resulting solutions. Through an animation, they see...
CK-12 Foundation
Ck 12: Plix: P H Concept
[Free Registration/Login Required] Arrange the household items so that their pH corresponds to the scale.
CK-12 Foundation
Ck 12: Physical Science: P H Concept
[Free Registration/Login may be required to access all resource tools.] Definition of pH and the strength of acids and bases. How to use the pH scale and why pH is important to living things.
Museum of Science
Miami Museum of Science: P H Panel
Try putting different liquids into a virtual pH tester to find out whether they are acids or bases.
Simon Fraser University
Chem1 Virtual Textbook: Plotting the P H
Acting as an overview from the General Chemistry Virtual Textbook, this site acts as one in a series of slides on acid-base systems. This particular slide deals with coordinating pH graphs.