How do you get a theorem named after you? Euler knows what it takes! The third lesson of five asks pupils to use an interactive activity to compare the faces, vertices, and edges of seven different three-dimensional solids. They use...

A complete lesson on compounds, from introductory material in the beginning to a practice exam at the end. This lesson covers bonding, ionic compounds, molecular compounds, naming compounds, structural formulas, polyatomic ions, and much...

Learn how to calculate the kinetic energy of a gas molecule, describe the relationship between the temperature of a gas and the kinetic energy of atoms and molecule, and describe the distribution of speeds of molecules in a gas. The...

Explore the thermal behavior of gases, in particular, examine the characteristics of atoms and molecules that compose gases. Learn about the ideal law of gases in terms of molecules and moles. Multiple formulas and examples are provided.

We gain a better understanding of pressure and temperature from the kinetic theory of gases, which assumes that atoms and molecules are in continuous random motion. Learn more about Kinetic Theory with the following detailed resource...

Read common questions and answers about atoms, elements and molecules.

This interactive activity developed for Teachers' Domain demonstrates how attractive forces between atoms create chemical bonds, resulting in the formation of molecules and compounds.

Kid's learn about the science of the molecules. Tiny chemistry and compounds of atoms and elements make up all matter.

At this website from The Nobel e-Museum, read about Harold Clayton Urey (1893-1981 CE), the chemist awarded with a Nobel Prize "for his discovery of heavy hydrogen." Download Urey's Nobel Lecture, "Some thermodynamic properties of...

Problem sets, tutorials, and activities related to biochemistry.

ChemCenter, available from the American Chemical Society, provides chemistry news, reference sources and other public services.

These interactive materials will help you to understand how matter is made up and will help you expand your knowledge on matter. You will find an evaluation at the end.

Access hundreds of teacher-tested, practical physics lessons on this well-organized, illustrated site. Find just the right demonstration, attention-grabber, or lab for any physics teaching objective at your fingertips.

An excerpt of Perrin's paper "Brownian Motion and Molecular Reality". Includes references.

Study chemical bonding in chemistry including atoms, valence electrons, ionic and covalent bonding, and how molecules are formed on this site!

Kids learn about organic chemistry including the importance of carbon, organic molecules, compounds, hydrocarbons, synthesis, and functional groups.