Learners 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.

Media-rich lesson in which learners discover that it takes energy to break bonds, and that energy is released when bonds are formed during the process of dissolving. They also determine whether dissolving is either exothermic or...

Learners 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.

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

Lesson plan with mulitmedia links in which students identify and control variables to help design a solubility test for different liquids in 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.

Some molecules can be either left- or right-"handed." The left- and right-handed molecules have the same number and type of atoms, and their chemical structures look identical, but they are actually mirror images of each other. Many...

[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...

A learning module giving the definition of a covalent bond, the compounds and elements they make up and why they form. Module includes reading and review questions.

Explore the chemical properties involved in surface tension.

Find out if liquids can dissolve in water.

Created to teach students of the 21st century, SOPHIA is bringing electronegativity straight to your fingertips. Become the commander of your own learning experiences as you take part in this interactive lesson and help make learning...

This site is provided for by the McMaster University. Slides 34-36 in this presentation define electronegativity and relate it to bond polarity.

In this online biology textbook, learn about atoms and molecules as they relate to life. Find out about topics such as electrons and energy, chemical bonding, and chemical reactions.

Problem sets, tutorials, and activities related to biochemistry.

In this lesson, Mentos candy and different types of soda are used to show examples of nucleation, surface tension, surface area, polar attractions, and supersaturated materials. A video will be used to show the examples and the students...

Test your knowledge of Chemistry. Complete the diagram by dragging the labels to the correct location.

Exploratorium's snacks aren't edible, but they are good! Use your science skills to discover gravity, learn about biology, do fun experiments.

[Free Registration/Login may be required to access all resource tools.] Explains hydrogen bonds including why they form and changes of state.

Each amino acid has at least one amine and one acid functional group as the name implies. The different properties result from variations in the structures of different R groups. The R group is often referred to as the amino acid side...

A model that explores why electrons are so important in chemistry. Investigate electron clouds, what happens when two atoms come together, and chemical polarity.

This slide show on atomic bonds contains several slides on electron affinity. Other topics include covalent, Sigma and Pi bonds, and atomic bonding in solids.

This PowerPoint presentation features 33 slides that explain chemical bonding and molecular shape.