Question

why do materials diffuse into each other​

Answer 1

Answer:

Diffusion is a property of liquids and gases. It happens because of the difference in the concentration between the particles. Generally, the particles move from the area of higher concentration to the area of lower concentration until it is evenly spread out.

Answer 2

Answer:

Materials diffuse into each other because of their free movement of the particles.  Diffusion in liquids is slower than diffusion in gases because the particles in a liquid move more slowly.