Chemical Relationships
Acids and Bases (Previous Version): An Introduction
Further Exploration
Acid-Base Pairs, Strength of Acids and Bases, and pH
Dr. George M. Bodner, Department of Chemistry, Purdue University
J. Park, ChemTeam - Extensive tutorials detailing acid base chemistry in historical context.
A Basic History of Acid— From Aristotle to Arnold
By Mark S. Lesney, discusses the rise of acid/base theory and how its associated instruments transformed chemistry.
Biography


Classics
Some Remarks on the Concept of Acids and Bases
J. Brønsted - excerpts from his 1923 paper.
The Measurement and Meaning of Hydrogen Ion Concentration
S. Sörensen - excerpts from his 1909 paper.
News & Events
Folic Acid Lowers Risk of Heart Disease
U. Michigan (ScienceDaily)
News from around the world of science.
Research
Google - Research database allows searching of the scholarly literature.
Experiment!
Mihye Won, University of Illinois at Urbana-Champaign - Virtual chemistry lab for acid-base titration.
An interactive simulation to explore how concentration and strength affect ph. Published by PhET at the University of Colorado.
Next Generation Science Standards (NGSS)
Next Generation Science Standards: For States, By States
National Academies Press: A Framework for K-12 Science Education