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

This tutorial explains the basic concepts of ionic bonding, with a good discussion of lattice energy.

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

An in-depth look at the physical and chemical properties of aspartame, or NutraSweet.

Problem sets, tutorials, and activities related to biochemistry.

A collection of grid puzzles that cover a wide variety of topics in intermediate high school chemistry. These are excellent for topic review and reinforcement. The puzzles can be played online and also downloaded as worksheets. Answers...