Video describes how moles are used in chemistry and how their size is measured. [4:33] Followed by a short quiz and a list of additional resources to explore.

This site deals with Amedeo Avogadro, his life, his contributions to chemistry, and his famous number.

This slide and audio book shows how to relate mass to a number of particles by using many formulas, examples, and real life scenarios. View the weighted average calculations, Avogadro's number, the atomic mass of carbon, and molar mass.

This site directs teachers to relevant information for use in the teaching of chemistry. The site's content includes projects, demos, labs and activities, and more.

[Free Registration/Login Required] In the mole carnival, students count the number of atoms and particles in different objects found at the carnival. As students work to find the number of particles, they practice counting particles by...

A collection of video lectures to teach junior high students topics in chemistry. Lectures cover topics in understanding the periodic table, compounds, chemical bonding, Avogadro's number, balancing chemical equations, stoichiometry,...

Animation depicting Avogadro's Law or how the volume of a gas is affected by the number of gas particles. See what happens to the volume of a gas when the pressure and temperature stay constant.

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will identify three methods for measuring the amount of matter in a sample. They will define the mole and its relationship...

Through informational text, interactive practice problems, virtual simulations, and video clips, students learn about the gas laws.

This page from Iowa State University describes the various experimental ways that Avogadro's number has been determined.

A page, written by Donald E. Simanek of Lock Haven University discusses misused and misunderstood physics terms and concepts. It reminds us that Avogadro's number is a constant, and should be treated as such.

An introduction to the mole, a unit of measurement that quantifies atoms and molecules.

Watch a short tutorial showing the conversion between the amount of a substance expressed in number of molecules to the amount of a substance expressed in moles of molecules, and then try some dimensional analysis practice problems.

[Free Registration/Login may be required to access all resource tools.] In this learning module, students investigate the mole concept, and learn three ways scientists to quantify things as tiny as atoms.

[Free Registration/Login may be required to access all resource tools.] The following online tutorial describes how a gas can be compressed and identifies three factors that affect gas pressure. Students will describe the effects...

A very complete list of terms that are important to the study of gases. This resource is a web archive.

A lengthy page covering most all the gas laws. Each law is described in words and stated as an equation. The use of each law in solving problems is demonstrated. Some problem-solving tips are provided. There are 23 practice problems with...