The Brownian motion is due to the impact of molecules of the dispersion medium on the colloidal particles.
It is the random movement of the low weight particles suspended in a fluid. It arises because of the unequal impacts of the particles of the dispersion medium on the colloidal particles.
Listed below are examples of brownian motion
- The motion of pollen grain on still water
- Movement of dust motes in a room (although largely affected by air currents)
- Diffusion of pollutants in the air
- Diffusion of calcium through bones
Factors affecting Brownian movement
- The higher the temperature, the faster the diffusion will be because the stronger the molecule movement and thus the mixing
- Increased number of particles, small particle size, and low viscosity increase the rate of motion affects the motion.