Liquid diffusion

Liquid diffusion is the process where molecules naturally spread out from an area of higher concentration to an area of lower concentration. Imagine adding a drop of ink to water; over time, the ink molecules disperse evenly throughout the liquid without any external force, driven by the natural movement of molecules. This occurs because molecules are constantly moving and colliding, leading to a gradual mixing until a uniform distribution is achieved. Diffusion is essential in many biological and chemical processes, such as nutrients passing into cells or gases exchanging in the lungs.