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What Does Diffusion Mean?

18 Answers

amber Jhon Profile
amber Jhon answered
During the diffusion process, the particles move from one concentration level to the other because of the concentration gradient. The movement of the particles takes place because one area has high concentration of that substance as compare to the other area. For example, if a car Tyre punctures then air diffused out of the Tyre because of the diffusion process. Moreover, diffusion is an example of passive movement of particles.  
Anonymous Profile
Anonymous answered
When particles move from a higher concentration to a lower concentration. This movement is called diffusion. An example could be how nutrients are absorbed from our food in the small intestine. The cells lack these nutrients, but the out side environment of the cell -the intestine- contains a lot of the  nutrient, its concentrated with it. Thus the nutrients will move from the intestine in to the cells. This will continue until the concentration of nutrients inside and outside the cell reach equilibrium, meaning the concentration outside and inside are equal.
Anonymous Profile
Anonymous answered
Diffusion is defined as the spontaneous spreading of matter, heat, momentum or light, the movement of particles from higher chemical potential to lower chemical potential.

Some examples of this happening include when dried spaghetti is cooked and water molecules diffuse into the spaghetti strings. This is a physical process rather than a chemical reaction that causes the strings to become thicker and more flexible.

Another example is where a helium balloon deflates slightly every day due to the helium atoms diffusing out of the balloon through its wall. This is called effusion.

Another example is where carbon dioxide bubbles in soft drinks grow due to the diffusion of carbon dioxide molecules towards them.
pratheepa prakasam Profile
Diffusion is the movement of suspended or dissolved particles from a more concentrated to a less concentrated area. The process tends to distribute the particles more uniformly.
heather leipego Profile
heather leipego answered
It is a movement of particles from a high concentrated region to a low concentrated region until they are evenly distributed...
Anonymous Profile
Anonymous answered
Defination of diffusion is given in my school's text book,it's in my book self ,come and check it at my home.
Anonymous Profile
Anonymous answered
The movement of particle from a high to a low concentration
Anonymous Profile
Anonymous answered
DIFFUSION is a process which substance moves from a region of high concentration to a region of low concentration
Kath Senior Profile
Kath Senior answered
Diffusion is a physical process in which a substance moves from a region of high concentration out into regions of lower concentration. This sounds complicated, but its not when you think about it happening in everyday life. A good example of diffusion is the diffusion of food molecules in the air from a kitchen when dinner is being prepared. When cooking begins, the food molecules start to move outwards from the region of high concentration near the cooker and they reach other parts of the house and even the garden, letting everyone know its nearly time to eat.

Diffusion occurs because all particles in gases and liquids move about. This motion is called Brownian motion and is random. The individual particles and molecules vibrate and bounce around and off each other. The net effect is that molecules tend to spread out, rather than stay concentrated in one place.

Diffusion is affected by temperature. It is quicker at higher temperatures. This is because the molecules gain more energy as they get hotter, they move around more and so bounce away from each other more quickly.
Aun Jafery Profile
Aun Jafery answered
Diffusion is a noun that refers to the process or act of diffusing or being diffused, it also refers to a needless profusion or use of words. It also refers to the spread or absorption of culture and language from the interaction between communities. In Physics it refers to light being scattered when reflected by a rough surface, or the transmission or passing of light through a translucent material and also the intermingling of particles spontaneously when two or more substances experience random thermal motion.

Synonyms of the word include dispersal, dissemination and dispersion.

Diffusion is also a term found in marketing which refers to the process by which a new product or idea which grasps the attention of a few and is gradually adopted by all the members present in that target market.
Em Profile
Em answered
It really depends on the context of the word but a basic definition might be simply:  The movement of a substance where there is high concentration or volume to an area where there is low concentration or volume. Hope that helps. :-)
Anonymous Profile
Anonymous answered
A person rescued from a fire. There is a lot of smoke. Emergency personnel fit him with a oxygen mask. How do I sum that up to the effect of diffusion?
Anonymous Profile
Anonymous answered
Diffusion is the movement of particles from a higher concentration to a lower concentration.  It occurs in many places we don't realize. As a matter of fact, its how nutrients from our food is absorbed by the small intestine.
abhi khan Profile
abhi khan answered
The Diffusion ocur because particles in a liquid or gas are free to move according to the kinetic theory of matter. The molecules move randomly, but there is more chance that they will move out of the ink drop than into it, so the molecules diffuse until their colour becomes evenly distributed throughout. Diffusion occurs more rapidly across a higher concentration gradient and at higher temperatures.

Diffusion is quite different from the movement of molecules when a fluid is flowing. In this case movement is not random; all molecules are moving together and in the same direction....

Thwe Diffusion is a term used to liquids as well as gases. This is a phenomenon where there is a movement of molecules passively from the region of their high concentration to a region of low concentration. Osmosis is a phenomenon in which the solute molecules in a solution move from its low concentration to its high concentration across a semi permeable membrane. When the biological cell has to create balance between the inside of the cell and the extra cellular space, then the passive movement of the particles occurs across the partial or semi permeable membrane. The semi permeable membrane allows only some particles to move across it and not all.

When the solute concentration is more inside the cell and is lesser outside, water or solvent moves from the extra cellular space to the inside of the cell. This type of maintaining balance is done by the water molecules. If there is any movement of molecules randomly from the low solute concentration to the higher concentration, then it is called diffusion. This can also be written as the movement of solvent molecules from their higher concentration to a lower one to attain equal concentration on both sides. This movement is spontaneous and random. The difference in solvent concentration is called as concentration gradient. Diffusion is always a movement down the concentration gradient. It happens very spontaneously across higher concentration gradient. This phenomenon occurs due to the movement of molecules as per the kinetic theory of gases. In diffusion, the solute molecules tend to get distributed in equal concentration all over. It also tends to take place at high temperatures. Diffusion is not similar to the movement of molecules in the flowing waters. In the flowing water, the movement of molecules will not be random but the molecules all move at a time in a single direction....
Anonymous Profile
Anonymous answered
Diffusion is the spreading out of particles from a region where there are many to a region where there is little or none

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