Question

What term is used to describe the natural movement of particles from an area of high concentration to an area of low concentration?

Answer 1

Diffusion

Explanation:

Diffusion is the movement of particles from an area of high concentration to an area of low concentration. Following picture is showing diffusion, here a drop of color is added to water, the color particles are moving from high concentration area to low concentration area.

www.wikiwand.com

Following picture shows another demonstration of diffusion:

www.highlands.edu