Because diffusion involves the random movement of particles. In a solid, particles cannot move to an area of low concentration as the intermolecular forces are too great. So the particles stay tightly packed in a solid.
The molecules are too tightly bound to one another to be able to move about separately and get through a membrane.
Gases, Liquids, and then Solids.
The rate of diffusion in solids is very low for a few reasons. The particles are very tightly kept in bound positions. They are not free to move around.
Gases the most, then liquids. Solids generally don't diffuse.
the property is diffusion
R. M. Barrer has written: 'Diffusion in and through solids' -- subject(s): Diffusion, Solids
The molecules are too tightly bound to one another to be able to move about separately and get through a membrane.
Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but is referred to separately in that case as heat convection.
diffusion.
Gases, Liquids, and then Solids.
Yes, gases do show the property of diffusion as its molecules are loosely packed.
Frank E. Jaumot has written: 'A bibliography of diffusion of gases, liquids and solids in solids, 1890 to 1955' -- subject(s): Abstracts, Bibliography, Diffusion
Diffusion occur in all phases.
The rate of diffusion in solids is very low for a few reasons. The particles are very tightly kept in bound positions. They are not free to move around.
Diffusion occurs with all molecules, but for many solids, it is an extraordinarily slow process at normal temperatures. Solids in contact with other solids may exchange a few molecules per second, and some may "jump back" again. The diffusion speed can be increased by raising the substances to high temperatures, giving the exterior molecules greater energy.
Molecules in a solid are stuck in a matrix or crystal and basically don't move. No motion, no diffusion.
Diffusion