Diffusion happens when particles spread and tends to move to high concentration region from lower region.
Diffusion will be easy when particles are free to move and it is faster in gaseous state.
What is diffusion?
diffusion can be regarded as a process which takes place as a result of random motion of molecules moving from high concentration region to a low concentration region.
Learn more about diffusion at;
https://brainly.com/question/637002
