Thermodynamics: Difference between revisions
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I added text on the third law of thermodynamics as well as slightly expanding the other two laws of thermodynamics. I thought this was important as it gives a rounder picture of all the laws |
Good edit. |
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Thermodynamics is the study of processes involving changes in temperature and transformation of energy<ref>Thermodynamic Concepts. Adapted from VW,S&amp;amp;amp;amp;amp;amp;B: Chapter 1 http://web.mit.edu/16.unified/www/FALL/thermodynamics/thermo_2.htm.</ref>. It also is important in describing the relationships between heat and [[Work|work]]. It can be used as an engineering tool for describing power and energy systems. | Thermodynamics is the study of processes involving changes in [[temperature|temperature]] and transformation of [[energy|energy]]<ref>Thermodynamic Concepts. Adapted from VW,S&amp;amp;amp;amp;amp;amp;amp;B: Chapter 1 http://web.mit.edu/16.unified/www/FALL/thermodynamics/thermo_2.htm.</ref>. It also is important in describing the relationships between [[heat|heat]] and [[Work|work]]. It can be used as an engineering tool for describing power and energy systems. | ||
There are 3 laws of thermodynamics | There are 3 laws of thermodynamics: | ||
#The first law states that energy can neither be created nor destroyed. This law states that the energy contained within the Earth always has and always will remain constant. | |||
#The second law states that [[Entropy|entropy]], which the level of disorder within a system or the tendancy for things to move from a level of order to disorder, always increases as energy types are converted (e.g. heat to kinetic)<ref>Fullick AMcDuell B. Edexcel A2 Chemistry. 1st ed. Essex: Pearson; 2009.</ref>. | |||
#The third law of thermodynamics states that in a perfect crystal at 273K also known as absolute zero, the entropy is 0<ref>Lucas J. What is the Third Law of Thermodynamics? [Internet]. Live Science. 2016 [cited 5 December 2016]. Available from: http://www.livescience.com/50942-third-law-thermodynamics.html</ref>. | |||
=== References === | === References === | ||
<references /> | <references /><br> | ||
< | |||
Revision as of 08:30, 6 December 2016
Thermodynamics is the study of processes involving changes in temperature and transformation of energy[1]. It also is important in describing the relationships between heat and work. It can be used as an engineering tool for describing power and energy systems.
There are 3 laws of thermodynamics:
- The first law states that energy can neither be created nor destroyed. This law states that the energy contained within the Earth always has and always will remain constant.
- The second law states that entropy, which the level of disorder within a system or the tendancy for things to move from a level of order to disorder, always increases as energy types are converted (e.g. heat to kinetic)[2].
- The third law of thermodynamics states that in a perfect crystal at 273K also known as absolute zero, the entropy is 0[3].
References
- ↑ Thermodynamic Concepts. Adapted from VW,S&amp;amp;amp;amp;amp;amp;B: Chapter 1 http://web.mit.edu/16.unified/www/FALL/thermodynamics/thermo_2.htm.
- ↑ Fullick AMcDuell B. Edexcel A2 Chemistry. 1st ed. Essex: Pearson; 2009.
- ↑ Lucas J. What is the Third Law of Thermodynamics? [Internet]. Live Science. 2016 [cited 5 December 2016]. Available from: http://www.livescience.com/50942-third-law-thermodynamics.html