Create your own sandwich and then see how many sandwiches you can make with different amounts of ingredients. Do the same with chemical reactions. See how many products you can make with different amounts of reactants. Play a game to test your understanding of reactants, products and leftovers. Can you get a perfect score on each level?

Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?

Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?

Small molecules serve as nutrients and thus provide both energy and building blocks required for the body’s maintenance, growth and development. This Mini Lecture explores the Nobel Prize awarded discoveries and the structural characterization of small molecules such as vitamins, hormones and neurotransmitters.

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values.

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values. Arabic Language.

Investigate what makes something soluble by exploring the effects of intermolecular attractions and what properties are necessary in a solution to overcome them. Interactive models simulate the process of dissolution, allowing you to experiment with how external factors, such as heat, can affect a substance's solubility.

Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the interaction potential to the forces between molecules.

Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the interaction potential to the forces between molecules.

Heat, cool and compress atoms and molecules and watch as they change between solid, liquid and gas phases.

This package, written in 1998, has interactive demonstrations of the link between energy levels and thermodynamic properties of molecules and gases.

It is intended for third or fourth year undergraduates in the physical sciences.

To download, click on View Download and follow the instructions. To uninstall, use the standard Windows option of “Add or Remove Programs”.

What happens when sugar and salt are added to water? Pour in sugar, shake in salt, and evaporate water to see the effects on concentration and conductivity. Zoom in to see how different sugar and salt compounds dissolve. Zoom in again to explore the role of water.

An inquiry activity for students to test physical properties of several compounds to analyze data and determine if the compound is ionic or covalent. This is ideal for an introduction to ionic and molecular compound nomenclature.

We will go below the surface and learn how water chemistry plays an important role in the Rain Shadow Effect. First, check out the Watershed Council Director video to learn how the Powder Basin Watershed Council is supporting efforts to restore their rivers, streams, and lakes in an arid part of Eastern Oregon. In the Discovery Challenge video, explore and learn how water chemistry plays a role in the rain shadow effect causing Eastern Oregon to not get nearly as much rain as Western Oregon.

This lesson introduces NGSS standards, and those standards are listed in the lesson and is part of the Explore Science Club series, an online Career Connected Learning program developed by the Greater Oregon STEM Hub. To learn more find us at: www.go-stem.org.

This is an out of class exercise that allows students to explore biological molecules that contain heme like molecules with metals bound in them. The properties of these molecules give them different colors and functions, but all are related evolutionarily.

This Mini Lecture explains the method of X-ray crystallography for elucidating the structure of molecules. It enables scientists to decipher the structure of important and complex biochemical molecules and helps them to understand their function. Starting from the x-ray diffraction by crystal lattices, first described by the physicist Max von Laue, to the decoding of the most complex molecular structures, this Mini Lecture illuminates the history of the X-ray analysis.

Students will have to solve the real world problem of locker smell leakage by building an air filter that will cover the vents on the top of a locker. This project goes well with a curriculum on the particle nature of gases and phase changes.