liquid or gas. Ad TopicsStates of MatterDescriptionWatch 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.Sample Learning GoalsDescribe a molecular model for solids liquids and gases.Extend this model to phase changes.Describe how heating or cooling changes the behavior of the molecules.Describe how changing the volume can affect temperature pressure and state.https://phet.colorado.edu/en/simulation/states-of-matter
