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.

Generate all polar, all nonpolar, or random proteins and observe how the protein folds in response to these molecular properties. Explore how the potential energy of the system changes over time to draw conclusions about how proteins...

Mix polar and nonpolar molecules together and observe changes in potential energy.

Good introduction and graphics make this a solid page for understanding the orbital role in bonding and molecular geometry. The author is a professor at Florida State University.

View a hypocycloid being created in this simulation.

Find out how temperature, polarity, pressure, molecular size, and stirring affects the speed of dissolving.

Experiment with mixing liquids and observing the volume they take up.

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...

Problem sets, tutorials, and activities related to biochemistry.

Select an oil or water environment for molecules and observe how they are affected by interactions with their environment and each other.

Discover how peptides fold into stable conformations.