Thermodynamics: Difference between revisions
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Added some more text because I believe one of the laws of thermodynamics was left out and although it is much more chemistry based I do believe it's important for it to be stated. Due to the additional information I also added 2 references. |
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 |
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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;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 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. | ||
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 | 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>. | ||
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Revision as of 12:46, 5 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;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