In this activity, students construct models of molecules using marshmallows and gum drops.

Visually inspect virtual molecules and their reactions to changes in energy levels and vibrations. Choose from 24 different molecules and adjust viewing angle, pace of simulation, and more. Create a presentation of your explorations as...

College-level site goes into great detail about chemical bonding properties, as far as energies, structure, angles, and length. Infrared absorption, the greenhouse effect, and global warming are addressed to exemplify bond length...

Help your students understand the scale of nanosize objects with this activity. By placing a drop of oil on top of another, students will estimate the size of an oil molecule. Includes activity instructions, analysis questions and...

The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with both Boltzmann Distribution and the velocity of gas molecules.

Explore the movement of the molecules in a solid.

This is an article published by the American Physical Society on friction in microscopic gears that results from the adhesion of molecules. A great exploration of this new obstacle in science.

Discover what you know about the nature of molecules by taking this post test.

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

As part of the General Chemistry Virtual Textbook, this site continues a study conducted on various topics related to gases. As a specific topic, the site covers an introduction to kinetic molecular theory.

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

Lipids are defined. Chemical structures are used to demonstrate that fats and oils store energy.

This general tutorial begins with an explanation of the polarity of the water molecule and the effects this polarity has on the properties of water. Goes on to introduce organic molecules and has a thourough tutorial on the third page.

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...

Site describes process of photosynthesis, including role of pigment molecules, electron transport, ATP synthesis, and carbohydrate synthesis. Includes links to illustrative graphics.

What molecules were involved in the origin of life? This series explores the roles of RNA, DNA, and protein. Special attention is given to RNA because of its ability to perform several tasks necessary for life processes. All of the...

The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with diffusion along with topics such as concentration gradient and random...

Discover what ozone molecules are made of and the important role ozone plays in the safety of humans. In this article, learn about scientists rating ozone levels and the harm linked with "bad" ozone levels.

A great page for all around biochemistry and background information. Includes the molecular structure and most of the information relevant to its role in living cells.

In this interactive activity from NOVA, learn about the molecular structure of steroids. See the intermediate molecules that are part of the pathway for synthesizing cortisone from diosgenin.

This Access Excellence site provides a general biography of Linus Pauling, the two-time Nobel laureate who the elucidated chemical bonding, amino acid and protein structures, and the molecular basis of sickle-cell anemia.

The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section seeks to answer the question, how far does a molecule travel between collisions?

Kids learn about the carbohydrates in the science of biology. These organic molecules make up starches and sugars which provide energy for plants and animals.

By the end of this section, you will be able to express the ideal gas law in terms of molecular mass and velocity; define thermal energy; calculate the kinetic energy of a gas molecule, given its temperature; describe the relationship...