Article defines and explains compounds which are either ionic or covalent and molecules which are the simplest unit of a covalent compound. Molecules can be represented in many different ways.

Everythingin the universeis either matter or energy. All matter is made of combinations of about one hundred basic building blocks, the chemical elements on the periodic table. Going a step further and breaking these elements down to...

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.

Proteins are linear polymers formed by linking the a-carboxyl group of one amino acid to the a-amino group of another amino acid with a peptide bond. The formation of a dipeptide from two amino acids is accompanied by the loss of a water...

Discover new knowledge about molecular biology- how molecules fit together as a lock and key. This has given researchers new diagnostic tools that use immune cells from mice to produce antibodies to detect a specific virus or bacterium.

It's hard enough to weigh something as itty bitty as atoms or molecules. Factor in that they're careening by faster than Jeff Gordon on steroids, and you get an idea what scientists are up against. Using comet particles from NASA's...

Review over covalent, hydrogen, and ionic bonding in this article. Learn how molecules are held together by chemical bonds.

An article investigating why water makes a good solvent. Also, understand what molecules dissolve best in water.

Fats are part of a larger family of molecules known as lipids. Lipids occur naturally in your body and can also be ingested through the foods in your diet. Which fats are healthy and which should you avoid? The answer may surprise you.

This article describes the race to unlock the mystery of life by determining the double helix structure of the DNA molecule. The discovery of DNA and its structure is an example of collective learning.

Where air molecules are packed closely, air pressure is high. Where air molecules spread out, air pressure is low.

The sun's energy is the primary source of energy for all surface phenomena and life on Earth. Combined with the material of the Earth (including the molecules held close by the Earth's gravitational force called the atmosphere), this...

The sun's energy is the primary source of energy for all surface phenomena and life on Earth. Combined with the material of the Earth (including the molecules held close by the Earth's gravitational force called the atmosphere), this...

Students will be able to identify two ways that molecules and ions cross the plasma membrane.

DENSITY is a physical property of matter, as each element and compound has a unique density associated with it. Density defined in a qualitative manner as the measure of the relative "heaviness" of objects with a constant volume. For...

A game of missing match-ups is similar to the way different molecules align to ignite olfactory nerves. Gain insight into the theory of odor.

Learn interesting facts about nitrogen oxides, gases whose molecules are made of nitrogen and oxygen atoms and contribute to air pollution.

Learn about "hydrocarbons", chemical compounds whose molecules are made up entirely of carbon and hydrogen atoms.

In a gas, there are lots of molecules traveling at lots of different speeds. Here's a framework for thinking about that.

Explains what intramolecular and intermolecular forces are and the different types for each. Includes lots of examples.

Soak in this article featuring ways metabolomics studies will aid in understanding diseases in both humans and animals. Metabolomics is the study of metabolite profiles.

Find out about the man who was considered to be the greatest and most influential biochemists in history.

Learn what ozone is, where it is found, and why it is important.

An expanded list of exhibits and quick facts surrounding the DNA molecule and its importance.