Answer: Try mass that’s the best guess I can give off the top of my head
Explanation: An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms come together which forms molecules. These molecules interact to form solids, gases, or liquids.
explain
diffusion in solids
have a great day
Answer: Well,diffusion does not happen in solids because the particles are not free to move around and so they cannot inter-mix.