Diffusion Sim


Diffusion describes how particles of matter move through other liquids and gases (including air). Diffusion explains how the mass of particles and temperature are related to how quickly particles spread out over an area.

Kinetic Molecular Theory Sim

Kinetic Molecular Theory

Kinetic Molecular Theory describes the behavior of tiny gas particles, which are too small to be seen even with the strongest microscope. Kinetic means “motion,” so the theory is all about particles moving!

Gas Laws Sim

Gas Laws

The Gas Laws bring together temperature, volume and pressure and help us to see how these factors are related.


Phase Change Sim

Phase Change

Phase Changes are changes of state, such as the change from liquid to gas, solid to liquid, or gas to liquid. When we heat particles, why are they able to change their state?