[Free Registration/Login may be required to access all resource tools.] Covers the structure and properties of water.

Delve into a microscopic world working with models that show how electron waves can tunnel through certain types of barriers. Learn about the novel devices and apparatuses that have been invented using this concept. Discover how...

This is a 10-question quiz pertaining to stereochemistry.

In this module Activity 3 investigates When atoms get close to each other, what happens to their potential energy? This activity applies energy concepts to compare the potential energy of atoms that are bonded as molecules with the...

The following module illustrates a method for determining if a molecule is polar or nonpolar.

A good site that begins with the background and branches into the structure, function and applications of technology. This version of the page requires Java, and should open some applets that allow you to see the structures in 3-D.

Students compare and contrast passive and active transport by playing a game to model this phenomenon. Movement through cell membranes is also modeled, as well as the structure and movement typical of the fluid mosaic model of the cell...

This Franklin Institute webpage provides an introduction to understanding sound waves based on 5th grade science lessons.

A PowerPoint lesson reviewing the structure of lipids that allow them to store calories. Also learn the difference between saturated and unsaturated fats.

In this interactive activity from ChemThink, students will learn about covalent molecules and how the VSEPR theory predicts the shapes of covalently-bonded molecules.

A learning module with built-in interactive features where students can read about the differences between large and small molecules, build protein structures, and test their strength under different conditions. They will review polarity...

This lesson introduces the processes of endocytosis and exocytosis, both processes which move larger molecules in and out of the cell, by way of vacuoles. It is 3 of 4 in the series titled "Endocytosis and Exocytosis."

This lesson introduces the processes of endocytosis and exocytosis, both processes which move larger molecules in and out of the cell, by way of vacuoles. It is 4 of 4 in the series titled "Endocytosis and Exocytosis."

This lesson introduces the processes of endocytosis and exocytosis, both processes which move larger molecules in and out of the cell, by way of vacuoles. It is 1 of 4 in the series titled "Endocytosis and Exocytosis."

This lesson will explain the arrangement of elements on the periodic table, including the relationships among elements in a given column or row. It is 4 of 4 in the series titled "Elements."

This lesson will explain the arrangement of elements on the periodic table, including the relationships among elements in a given column or row. It is 1 of 4 in the series titled "Elements."

This lesson will explain the arrangement of elements on the periodic table, including the relationships among elements in a given column or row. It is 2 of 4 in the series titled "Elements."

This hands-on activity is an assessment of the learners understanding of peptide and disulfide bonds formed during protein synthesis, and the structure of an amino acid (R-group plus the common structure that all amino acids share)....

Atomic Force Microscopy (AFM) method used to get an image of the first molecule -- a pentacene structure -- in Switzerland, 2009.

Investigate ethers through this interactive 3-D molecule of diethyl ether. Also find links to animations, tutorials, and power points about other chemistry topics.

Want to know about more antibiotics that are used to treat a variety of diseases? This site includes basic information, molecular structure, mode of action, and links to interactive 3D molecule display for common antibiotics.

The electron-pair geometry of a molecule or ion depends on the number of structurally significant electron pairs in the central atom. Here students are asked to count the number of lone electron pairs and bonded atoms on the central...

Two multiple-choice quizzes, one on the processes and types of biological molecules, the other on the structure and replication of DNA.

[Free Registration/Login Required] Use your knowledge of molecular geometry to analyze the structures, and determine which of them accurately illustrates the trigonal planar molecule Boron Trifluoride. Then answer two challenge questions...