Diffusion - Revision history

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	[[Category:Done ~~2016~~-04-30]]		[[Category:Done 2019-09-05]]
	[[File:410px-Diffusion.svg.png\|400px\|framed\|right\|Figure 1. Diffusion of red molecules within a beaker. <ref>Wikimedia Commons. (May 16, 2016). ''Diffusion'' [Online]. Available: https://commons.wikimedia.org/wiki/File:Diffusion.svg</ref>]]		[[File:410px-Diffusion.svg.png\|400px\|framed\|right\|Figure 1. Diffusion of red molecules within a beaker. <ref>Wikimedia Commons. (May 16, 2016). ''Diffusion'' [Online]. Available: https://commons.wikimedia.org/wiki/File:Diffusion.svg</ref>]]

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	==Examples==		==Examples==
	Diffusion is everywhere around us in our everyday life. Ever wonder why party balloons filled with helium slowly deflate after a couple days. It's because the helium diffuses through the balloon into the environment. Diffusion normally occurs in our day to day life when there is a barrier, or membrane, separating the high concentration from the low concentration. With regards to energy science, there are forms of [[Isotope separation]] which utilize diffusion. [[Gaseous diffusion]] is used for the [[Uranium enrichment\|enrichment of uranium]] in order for the uranium to be used in nuclear power plants. [[Osmosis]], where there is a concentration gradient separated by a semipermeable membrane, is another good example of diffusion.		Diffusion is everywhere around us in our everyday life. Ever wonder why party balloons filled with helium slowly deflate after a couple days. It's because the helium diffuses through the balloon into the environment. Diffusion normally occurs in our day to day life when there is a barrier, or membrane, separating the high concentration from the low concentration. With regards to energy science, there are forms of [[Isotope separation]] which utilize diffusion. [[Gaseous diffusion uranium enrichment\|Gaseous diffusion]] is used for the [[Uranium enrichment\|enrichment of uranium]] in order for the uranium to be used in nuclear power plants. [[Osmosis]], where there is a concentration gradient separated by a semipermeable membrane, is another good example of diffusion.

	For more information on diffusion, please see [http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/diffus.html hyperphysics]. A good animated example can be found at this link: [http://highered.mheducation.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html Diffusion]		For more information on diffusion, please see [http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/diffus.html hyperphysics]. A good animated example can be found at this link: [http://highered.mheducation.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html Diffusion]
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			==PhET: States of Matter==
			The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. Explore the simulation to see how particles moving around in a gas lead to various gas properties:
			<html>
			<iframe src="https://phet.colorado.edu/sims/html/gas-properties/latest/gas-properties_en.html" width="800" height="600" scrolling="no" allowfullscreen></iframe>
			</html>

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported: From the summer

2016-09-17T22:29:22Z

1 revision imported: From the summer

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Jmdonev at 00:59, 13 June 2016

2016-06-13T00:59:11Z

New page

[[Category:Done 2016-04-30]]
[[File:410px-Diffusion.svg.png|400px|framed|right|Figure 1. Diffusion of red molecules within a beaker. <ref>Wikimedia Commons. (May 16, 2016). ''Diffusion'' [Online]. Available: https://commons.wikimedia.org/wiki/File:Diffusion.svg</ref>]]

<onlyinclude>'''Diffusion''' is a form of mixing, usually where [[molecule]]s disperse.</onlyinclude> More specifically, it is the net movement of molecules or [[atom]]s from a region of high concentration to a region of low concentration and is an effect directly related to the substances [[Kinetic energy|kinetic energy]] of random motion.<ref name="r1">Hyperphysics. (May 16, 2016). ''Diffusion'' [Online]. Available: http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/diffus.html</ref> The kinetic energy of random motion is different for each substance and therefore the rate of diffusion for different substances varies. Over the diffusion process the mixture will become evenly distributed with a uniform concentration of substance throughout the containment vessel, as seen in figure 1.<ref name= "r1"/>

==Examples==
Diffusion is everywhere around us in our everyday life. Ever wonder why party balloons filled with helium slowly deflate after a couple days. It's because the helium diffuses through the balloon into the environment. Diffusion normally occurs in our day to day life when there is a barrier, or membrane, separating the high concentration from the low concentration. With regards to energy science, there are forms of [[Isotope separation]] which utilize diffusion. [[Gaseous diffusion]] is used for the [[Uranium enrichment|enrichment of uranium]] in order for the uranium to be used in nuclear power plants. [[Osmosis]], where there is a concentration gradient separated by a semipermeable membrane, is another good example of diffusion.

For more information on diffusion, please see [http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/diffus.html hyperphysics]. A good animated example can be found at this link: [http://highered.mheducation.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html Diffusion]

===Note===
Diffusion is not to be confused with [[Convection|convection]], which is another form of spreading/mixing. Many examples of mixing you can think of in everyday life are actually instances of convection. Substances can also be mixed through the combination of both these two methods and for this reason defining many instances of mixing can be a little complicated.

A good video by P. Morton shows this difference below:

<html>
<iframe width="816" height="459" src="https://www.youtube.com/embed/pu5SWO6sGo0" frameborder="0" allowfullscreen></iframe>
</iframe>
</html>

==References==
{{reflist}}
[[Category:Uploaded]]