PHET Interactive Simulations: States of Matter Basics
Topics
Atoms
Molecules
States of Matter
Description
Heat, cool and compress atoms and molecules and watch as they change between solid, liquid and gas phases.
Sample Learning Goals
Describe characteristics of three states of matter: solid, liquid and gas.
Predict how varying the temperature or pressure changes the behavior of particles.
Compare particles in the three different phases.
Explain freezing and melting with molecular level detail.
Recognize that different substances have different properties, including melting, freezing and boiling temperatures.