Thermodynamics: Difference between revisions
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Thermodynamics is the study of processes involving | Thermodynamics is the study of processes involving changes in [[Temperature|temperature]] and transformation of [[Energy|energy]]<ref>Thermodynamic Concepts. Adapted from VW,S and B: Chapter 1 http://web.mit.edu/16.unified/www/FALL/thermodynamics/thermo_2.htm.</ref>. It is also 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 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 | #The second law states that [[Entropy|entropy]], which the level of disorder within a system or the tendency 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>. | #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 /> | ||
Latest revision as of 11:05, 17 October 2018
Thermodynamics is the study of processes involving changes in temperature and transformation of energy[1]. It is also 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 tendency 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 and 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