| Ultrascope View (Freezing & Melting): To open the Ultrascope View, use the Ultrascope View tool and click in the liquid or solid inside the container. In Run mode, the Ultrascope View shows the motions of particles, the collisions between them, and models the molecular bonds and the liquid-solid phase transition. Particles with different attraction strengths are depicted as different colors. The number of particles in the view changes according to variations in density. In Stop mode, the view shows only motionless particles. At the hotspots indicated below, you can attach meters for particle number density and average particle speed or energy. To attach a meter, you must click directly on the hotspot, as indicated by the cursor below.