Biologists extract the DNA from a strawberry. After completing the procedure, learners write answers to a few questions on the lab sheet provided. This is ideal lab practice during a DNA unit in your general biology course. 

Fifth graders examine polymers and how they are formed.  In this chemistry lesson students complete their own polymer experiment then discuss what they learned. 

In this biologically important molecules activity, learners fill in the blank with information about carbohydrates, lipids, and proteins. Students also make notes about nucleic acids.

High schoolers identify principles behind acid-base reactions. They predict factors that may affect an acid-base reaction. Students identify questions and concepts that guide scientific investigations.

Students examine diversity on the planet and the differences within a species.  In this investigative lesson plan students complete a lab that allows students to better understand the relatedness between plants. 

In this chemicals learning exercise, students answer 15 multiple choice questions about chemicals, compounds, inorganic and organic molecules.

Students experiment with crystals and polymers and examine their roles in food science.

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

This lesson will introduce the molecular structure of water, including the Hydrogen atoms, Oxygen atoms, and types of bonds. It is 2 of 4 in the series titled "Molecular Structure of Water."

This lesson will introduce the molecular structure of water, including the Hydrogen atoms, Oxygen atoms, and types of bonds. It is 3 of 4 in the series titled "Molecular Structure of Water."

Advanced chapter of the book "The Molecular Biology of the Cell" describes and provides illustrations of our most current understanding of the chemical makeup of cells and their components. Explains in detail how electron activity keeps...

These models show the structures of some basic molecules such as water and carbon dioxide, then move on to show more complex molecular strautures.

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

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.

Students use their own model of a salt crystal and water molecule to show how water dissolves salt. Then, they relate their observations to the structure of salt, water, and alcohol on the molecular level.

Interact with molecules of methane, ammonia, and water, by manipulating colorful applets to see these molecules from all sides and observe their tetrahedral shapes.

The molecular basis of indicator color changes. Includes Chime structures for the acid and base forms of phenolphthalein, methyl orange, red cabbage indicator, and cyanidin diglucoside.

An exhaustive set of "lecture notes" on various topics in thermal physics (including thermal expansion). Explanations are well done and more interesting than most. Includes both a mathematical and conceptual treatment of topics. Humor,...

An audio podcast accompanied by a diagram of a water molecule helps the learner understand molecular structure. [0:23]

In this chemistry classroom lab activity, students use critical thinking to investigate the molecular properties of different liquids: rubbing alcohol and water.

Demonstrate surface tension by sprinkling pepper on a bowl full of water, then touching a soapy finger to the water.