Everything evolved from a common ancestor, but how did modern plants and animals develop so many more genes? Scholars use an online interactive to learn about the process. They begin to understand common genes with an animation, multiple...

In this chemistry chapter review worksheet, students examine their knowledge of equilibrium, Brønsted acid, and pH value as they respond to 25 short answer questions.

In this electrochemistry instructional activity, students are given details as to how to solve strengths of oxidizing and reducing agents, battery chemistry and a summary of cell construction and convention.

A single page provides you with lecture notes for your lesson plan on hydrolysis. Introduce your chemistry class to Bronsted-Lowry theory by explaining the hydrolysis of acidic cations and basic anions. Show them how the resulting pH can...

In this buffers worksheet, learners identify the systems that could function as a buffer solution. Students determine the pH of a solution and the pH of the buffer. This worksheet has 6 problems to solve.

In this chemistry worksheet, students take an exam that presents the concept of maintaining the ph balance. This can become a formal assessment.

In this organic chemistry worksheet, students solve 15 problems including identifying specific organic molecules, drawing organic molecules and completing reactions of organic molecules.

In this viruses, bacteria, protists, and fungi worksheet, students will review the basic characteristics of each of these groups. Students will complete 7 fill in the blank questions about viruses, 6 true or false questions about...

This page, created by a chemistry professor from the University of Waterloo, provides an introduction to conjugate acid-base pairs.

This site, created by a University of Waterloo Chemistry professor, applies conjugate pair theory. It also deals with the ionization constants for acids and bases.

The objective of this article is to introduce conjugate pairs as a way to relate acids and bases.

Perform an experiment to determine the concentrations of a mixture of two acids.

Perform an experiment to determine the pKa and concentration of an unknown acid.

In this exercise, students graph the titration curve of an unknown acid and base to determine their pKa's and concentrations.

Textbook-style strong acid and base problems that can be checked using the Virtual Lab.

Textbook-style weak acid and base problems that can be checked using the Virtual Lab.

Understand the definition of Bronsted-Lowry acids and bases, strong and weak acids and bases, and how to identify conjugate acid-base pairs.

Listen and learn as you discover definitions for acid, base, and acid-base reaction. View example formulas of Arrhenius and Bronsted-Lowry acid and bases.

In this experiment, you will explore the behavior of the monoprotic acid (acetic acid) and the polyprotic acid (phosphoric acid). By titrating, you will examine the acid and conjugate base species present across the pH scale and the...

This simulation uses solutions of weak acids and examines the response of this equilibrium system to the addition of the corresponding conjugate base.

Beginning with the example of the hydrangea, this page gives a good overview of acid-base chemistry.

Perform an experiment to determine the pKa and concentration of an unknown weak base.

Use the virtual lab to determine the pKa of a protein then create a buffer solution with a specific concentration ratio of the protein in its protonated/ unprotonated form.

Students examine equilibrium and buffer solutions in a biological setting.