What is the physical process whereby atoms or molecules tend to move from an area of higher concentration or pressure to an area of lower concentration or pressure?

Question

Quizplus · Accepted Answer

Diffusion is the physical process whereby atoms or molecules tend to move from an area of higher concentration or pressure to an area of lower concentration or pressure. Sublimation is the process of changing from a solid to a gas without first becoming a liquid. Melting is the process of changing from a solid to a liquid. Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of external forces, such as gravity.

What Is the Physical Process Whereby Atoms or Molecules Tend