Students find the percent composition of sugar in the gum. In this chemistry instructional activity, students calculate percent error from the experiment. They use dimensional analysis to convert between units.

Students perform computer simulations on air dispersion. For this chemistry lesson, students calculate energy transfer based on specific heat and temperature change. They explain the causes of smog.

Build a molecule in 3-D. Add single, double, and triple bonds, or a lone pair of electrons to an atom, learn what the molecule's geometric name is, see the bond angles, and manipulate each molecule to view it from all sides. Then study a...

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...

As part of the "Basic Atomics" section of the Virtual Textbook, this site examines basic chemical nomenclature and covers a variety of subjects related to chemical substances. Other topic covered include naming the elements, binary...

[Free Registration/Login may be required to access all resource tools.] Covers molecular compound, binary molecular compound, molecules, and naming of binary molecular compounds.

Practice classifying substances using this fun, interactive exercise. Get either the formulas or names of substances, and decide which type of compound it is.

[Free Registration/Login may be required to access all resource tools.] Students investigate compounds, and learn the ways in which molecules are named.

Learn everything you ever wanted to know about naming binary covalent compounds! See how scientists came up with systematic names for many common molecules and study the prefixes and roots for them.

Studying simple compounds in chemistry? Find answers to several commonly asked questions with topics ranging from compound classification to polyatomic ions.

These pages are part of a site called Evolution that accompany a textbook by the same name. Mark Ridley is the author. In this section: the universal genetic code provides evidence that life has a common ancestor.

An explanation the mole (named for molecule) and Avogadro's Number. One mole of a substance is equal to 6.022 times 10 to 23rd power units of that substance (such as atoms, molecules, or ions). The number 6.022 time 10 to 23rd power is...

The ideal gas law is an empirical law; it's a relationship between the pressure in a system of gases to the volume, the temperature, and the number of gas atoms/molecules in the system. This "law" is valid if the gas atoms/molecules are...