How is the movement of particles in diffusion determined?

Diffusion is driven by the concentration gradient and kinetic energy of the particles/molecules that move in random motion and collide with one another. Diffusion is the movement of particles/molecules from an area of high concentration to an area of low concentration. Diffusion process continues until the particles/molecules are evenly distributed in the whole available space.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.