Watch the changes in the colour representing the potential energy of the particles. This phenomenon is called deposition . Select Take a Snapshot - Screen . The few gaseous particles are in equilibrium with the crystal. If yes describe them.
Deposition requires a significant amount of computer time to simulate.
We recommend opening the Experiment1b file in order to skip the earlier stages of the process and press Start . Switch Display Particles by to Potential Energies . You can see some gas molecules surrounding the crystal. The gas has much lower density than before. The gas particles separate from and rejoin the crystal.