ITEC Beauty Specialist – Skincare and Eye Treatments Practice Test

Brownian motion comes from the random, continuous collisions between solvent molecules and the suspended particles. Each collision transfers a small amount of momentum, and because the collisions occur unpredictably in time and direction, the particle takes on a jagged, chaotic path. This motion is a direct result of the thermal energy driving solvent molecules, not from the solvent molecules simply diffusing on their own or from gravity pulling the particles, and it isn’t caused by light emission. In short, the erratic jitter of the particle reflects momentum transfer from constantly moving solvent molecules.