Gas particles move very fast, much faster than in solids and liquids. The particles in a gas possess a lot of energy.Click to see full answer. In this way, in what phase of matter are the particles no longer moving? solid Secondly, what phase do molecules move the fastest? Phases of matter A B molecules move fastest in this phase plasma molecules move faster than liquids in this state gas molecules move the slowest in this state solid molecules move around each other in this state liquid Moreover, does a solid liquid or gas have the fastest moving particles? The particles are moving much faster than in a solid. When you add even more energy to the substance, you increase the kinetic energy of those particles so much, that they lose their state form, becoming a gas. Particles in a gas state move much faster than a liquid.In which state of matter are particles moving the fastest?With incresed energy, liquid particles are able to move faster than solid particles. As additional heat energy is added to a liquid substance, it becomes a gas. Gas particles have higher energy and can move quicker than liquid particles.