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...

Students discover the concept that density is a characteristic property of water by measuring the volume and mass of water and calculating its density.

Through informational text, interactive activities, animations, and video clips, students examine the chemistry of living things, and they learn how interactions from atoms are fundamental to life as we know it.

[Free Registration/Login may be required to access all resource tools.] Covers physical properties of water, hydrogen bonding, surface tension, and vapor pressure.

Have you ever wondered what makes water 'bead' up on a freshly waxed car? In this project you'll investigate the chemistry of surface tension by measuring how many drops of water a penny can hold.

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will describe the structure and polarity of a water molecule. They will also describe the hydrogen bonding that occurs in...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students will investigate the chemical and physical properties of the unique and important substance, water.

[Free Registration/Login may be required to access all resource tools.] Covers structure of water molecule, hydrogen bonding on water, polarity of water molecule, and bond angles of water molecule.

The purpose of this tutorial is to introduce you to some of the chemical concepts which are necessary to understand biology. Concepts include the basics for understanding biology, chemical bonds and attractive forces, the chemistry of...

An interactive animation showing some of the properties of water. See how the particles of water molecules move and stick together.

Students investigate water cycle processes by testing how cooling affects the rate of condensation of water vapor.

If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then, that cold packs go from room temperature to near freezing in mere seconds? John Pollard details the chemistry of the cold pack, shedding...

Students observe and investigate why water has a strong surface tension.

Students develop their own water molecule model to help them understand the idea that water has a slight positive charge at one end of the molecule and a slight negative charge at the other.

Discover how the molecular make-up of water affects its density.

Online biology textbook discussing the chemical nature of water, and the importance of its molecular structure to life. Also discusses at length the organic molecules nucleic acids, proteins, lipids, and carbohydrates.

Learn about the autoionization of water, the autoionization constant Kw, and the relationship between [H+] and [OH-] in aqueous solutions.

When it comes to making ice cream, in order to make the mixture cold enough to freeze, you surround the container with ice and rock salt. This experiment helps you learn how the addition of salt (or other substances) affects the freezing...

This activity introduces students to the complex chemistry of estuarine water. Students investigate how chemical and physical water quality factors-pH, temperature, dissolved oxygen, and salinity-change and interact over varying time...

You will find this list of questions interesting and amusing. "Things like, "Is salt water used for anything in the U.S.?," and How can we have a 100-year flood two years in a row?", are found on this this. Click Home to access the site...

Observe how heating and cooling affect the density of water. Combine the concepts of temperature, molecular motion, and density to learn that hot water is less dense than room temperature water and that cold water is more dense.

Ever wonder why some colors dissolve in water and others don't? Watch this video to learn why. [2:16]

Explore water's unique properties in the activities here. Includes ideas for starting a chemistry club, ideas for Earth Day, articles, and videos.

Learners determine whether a liquid will sink or float in water by comparing its density to the density of water.