name a process which provides the evidence for

a.motion of particles

b.attraction between particles

c.inter particle space

a. Diffusion is the process which provides evidence for motion of particles- Particles of various states of matter intermix with each other because of their motion.

b. The process of melting provides evidence for attraction between particles - The melting point of a substance indicate the  strength of forces of attraction between particles of the substance.

c.The process of dissolution as well as diffusion provide evidence for inter particle space-The extent of diffusion is larger for gases because inter-particle space is maximum in gases and solids dissolves in liquids because the solid particles move into the spaces between particles of liquid.