Students observe and discuss water on the molecular level using the idea that water is composed of tiny molecules that are attracted to one another.

When is a molecule polar? Change the electronegativity of atoms in a molecule to see how it affects polarity. See how the molecule behaves in an electric field. Change the bond angle to see how shape affects polarity. See how it works...

What is a molecule? Discover why molecules are formed and other fun facts.

Read common questions and answers about atoms, elements and molecules.

This simple lesson plan involves making a model of a water molecule from gumdrops. A toy car is also used to explain how a model compares to the real thing.

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,...

Explore molecular motion and attraction, and see how those phenomena affect the matter they comprise.

The Science of Water Teacher's Guide provides a number of inquiry-based activities for grades 3-5 (although it can be expanded for other grades). The guide contains science lessons that enable students to explore water, behavior of...

This lesson describes chemical synthesis in terms of building or breaking down molecules and discusses the value of chemical synthesis. Students will have a chance to play an interactive game that is analogous to the process of chemical...

This FAQ site over general chemistry concepts presents the question: "Why are moles used?" It explains what moles are and how they can be used to count molecules and how grams can be turned into moles.

Observe the motion and temperature of water molecules in this simulation as heat is applied to a beaker containing an ice cube.

Page uses movies and 3D images to explain how properties of water relate to polarity and hydrogen bonding.

Students learn how to create stem-and-leaf diagrams and boxplots by collecting data on the surface tension of water molecules. This hands-on activity using pennies is a great way to learn how to organize data.

How do greenhouse gases affect the climate? Explore the atmosphere during the ice age and today. What happens when you add clouds? Change the greenhouse gas concentration and see how the temperature changes. Then compare to the effect of...

Students investigate how low temperature causes water vapor to condense into a liquid and then freeze to form a solid.

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

One way scientists talk about matter or substance-that is, the stuff in the world-is in terms of pure substances and mixtures. Pure substances are substances that contain only one kind of molecule. Water with nothing else in it is a pure...

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

Learn how the molecular movement in different temperature water affects the density of the liquid.

Kid's learn about the science and chemistry of water. Molecule H20 and states such as ice, liquid, and vapor.

Kid's learn about the science of crystals. Repeating patterns of molecules form interesting shapes.

Investigate the organic molecules lipids which include fats, steroids, and waxes including saturated and unsaturated fats as well as interesting facts on this site.

DNA Helix, DNA structure, DNA bases, Nucleotides, strands of DNA, Bonding in DNA, and bonding between bases are the topics delved into in this thorough site.

FSERL: Explanation of the hierarchical levels of living things.