Biology - Diffusion

Diffusion - The spreading out of particles from an area of high concentration to an area of low concentration.

• In other words, diffusion is the gradual movement of particles from one area were there are lots of them to an area were there are fewer of them.
• Diffusion occurs in both solutions and gases as the particles within these substances are free to move around (as they contain free electrons).
• An example of diffusion could be when perfume is sprayed in a room. When it is sprayed, the particles within it start to diffuse through the…