In which phase transition do molecules directly move from a state involving vibration of particles in a fixed position to a state involving random movement of high-speed particles?
The phase transition in which molecules directly move from a state involving vibration of particles in a fixed position to a state involving random movement of high -speed particles is called : Sublimation
Particles in a fixed position = solid particle Random movement high speed particles = gas particles
The transition from solid to gas is called sublimation
It’s the phase of sublimation. It is a phase where a solid is directly converted into gas without turning into liquid. These are the English translation of what was asked in the question. Enjoy.