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en.wikipedia.org/wiki/Molecular_diffusion

Molecular diffusion, often simply called diffusion, is the thermal motion of all ( liquid or gas) .... However, there sometimes occur so-called quasi-steady states, where the diffusion process does not change in time, where classical results may  ...

www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/behaviour_of_matter/revision/4

Diffusion does not happen at all in solids because the particles in a solid can only vibrate on the spot, rather than being able to move from place to place.

www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/cells/cells3.shtml

Diffusion occurs when particles spread. They move from a region where they are in high concentration to a region where they are in low concentration. Diffusion ...

chemistry.stackexchange.com/questions/51178/diffusion-phenomena-why-does-diffusion-occur

The reason that you do not feel them is because they are too small. Also, you need to understand ... can be reached.That's why diffusion occurs.

www.quora.com/Why-does-diffusion-occur

Thanks for A2A. Scientifically Diffusion refers to the process by which molecules intermingle as a result of their kinetic energy of random motion. In Common...

blog.udemy.com/cell-diffusion

Jun 11, 2014 ... Diffusion is a process that occurs when a substance such as water, molecules, and ions, which are usually needed for various cellular ...

www.quora.com/Why-does-diffusion-occur-in-a-cell-1

Diffusion is when a molecule moves down its concentration gradient — from an area of high concentration to an area of lower concentration. The ultimate goal ...

www.quora.com/How-does-diffusion-happen-in-a-cell

Diffusion is the tendency for atoms to move from an area of high concentration to low concentration. Atoms diffuse because they “like” to be in ...

www.reference.com/science/diffusion-occur-c0a19ab696a10b9a

Diffusion occurs due to the thermal displacement of atoms or molecules, which cause these particles to randomly move in various media, such as solids, liquids  ...