PhET interactive simulations

Explore chemical concepts using these simulations

PhET sims are fun, interactive, research-based simulations of physical phenomena developed by the PhET project at the University of Colorado.

Acid-base solutions simulation
In association with PhET Interactive Simulations University of Colorado Boulder
Explore the basics of pH with this simulation. Add a variety of common solutions and modify the concentrations to see the effect on pH.
Beer's Law simulation
In association with PhET Interactive Simulations University of Colorado Boulder
Bring this theoretical principle to life.
Build an atom simulation
In association with PhET Interactive Simulations University of Colorado Boulder
Build an atom from scratch, using protons, neutrons, and electrons. Test different combinations to produce ions and unstable elements.
Concentration simulation
In association with PhET Interactive Simulations University of Colorado Boulder
Explore concentration with this interactive simulation. Add different solutes to water and adjust the controls to change their concentration:
pH scale advanced simulation
In association with PhET Interactive Simulations University of Colorado Boulder
Use this advanced pH simulator to view, modify, and visualise solutions with different ion ratios. Explore macroscopic, microscopic, and custom views.
pH scale basics simulation
In association with PhET Interactive Simulations University of Colorado Boulder
Explore the basics of pH using this simulation. Add a variety of common solutions, modify the concentration and see the effects on pH.