In this interactive activity be amazed with some of the most intriguing molecules made by chemists. These molecules are interlocked molecules, which have topological structures.

Read about the structure of RNA, its components, and how they fit together. This source includes visual aids to help you and a list of the different kinds of RNA and their functions.

Read a history of the discovery and study of DNA and its structure. Links to a graphic, other references, and classroom activities.

A brief introduction to the molecular structure of a water molecule, and the chemical bonding which gives it its unique properties.

This lesson will demonstrate how to draw a Lewis dot diagram for a molecule that has single bonds. It is 2 of 2 in the series titled "Lewis Dot Diagrams of Molecules - single bonds."

This video/lesson series explains how the structure and behavior of H2O in liquid form gives water its properties, and make it a chemical essential for life. Also in this collection: a Victorian-era depiction of the water molecule; news...

A really nice web page devoted to the structure of DNA. Simple information but nice use of graphics to show the molecule. Uses the CHIME plug-in to show the 3-D nature of the helix.

[Free Registration/Login may be required to access all resource tools.] The following online tutorial describes how a covalent bond forms, including the energy change involved in the process.Students will be asked to use the octet rule...

The Molecular Structure chapter from "An Introduction to Chemistry" textbook discusses the formation of covalent bonds, drawing Lewis dot structures, and the resonance and molecular geometry of molecules. Many pictures and examples are...

Access Excellence provides an excellent graphic showing the structure of the DNA molecule and its components.

This chemistry class printout details the main points of molecular geometry and explains bond hybridization and bond angles.

A very detailed discussion of ATP. Looks at its structure, how it works, the reactions that take place that use it or produce it, the phosphocreatine system, glycolysis, the lactic acid cycle, aerobic respiration, the citric acid cycle,...

Video describing the structure and function of the DNA molecule. [4:27] Includes a short quiz and a list of additional resources to explore.

Understand the basic structure of atoms and molecules in the Earth's crust.

Interact with these virtual structures of metal-organic frameworks. These special kinds of crystals are made of organic molecules and metal-containing units, which are linked together by chemical bonds.

Try considering the structures of the body in terms of fundamental levels of organization that increase in complexity: subatomic particles, atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms and biosphere....

George Zaidan and Charles Morton shape our image of molecules. [3:47]

In Beautiful Chemistry, we talk about crystals, quasicrystals and glasses, which are all solids. Here, we see the molecular structure of gases and liquids.

A set of questions about the molecular structure of water and of ice.

Explore molecule shapes by building molecules in 3D. Find out how a molecule's shape changes as you add atoms to a molecule.

Explore molecule shapes by building molecules in 3D. How does molecule shape change with different numbers of bonds and electron pairs? Find out by adding single, double or triple bonds and lone pairs to the central atom. Then, compare...

An explanation of the importance of fats and proteins in the human diet. Examples of chemical structures of various fats and proteins are used.

Retrace the development of our knowledge of nucleic acids by viewing pictures of nucleic acids (both DNA and RNA) taken in 1952, 1973, 1979, 1980, 1984 and 2001.

Ever wondered what the molecular structures of common metals really look like? With this three-dimensional animation, see all of the bonds within the molecules from all directions.