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BYU - PHY S 100 - Chapter 18, Week 10 Notes - Class Notes

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BYU - PHY S 100 - Chapter 18, Week 10 Notes - Class Notes

School: Brigham Young University
Department: OTHER
Course: Physical Science
Professor: Patricia Ackroyd
Term: Spring 2017
Tags: entropy
Name: Chapter 18, Week 10 Notes
Description: The Law of Increasing Disorder
Uploaded: 11/06/2017
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background image Chapter 18: The Law of Increasing Disorder     •  While energy can be completely converted into another form, it can't be converted back again 
with perfect efficiency.  
•  Law of increasing disorder:  changes in natural systems always end up either leaving amount of 
disorder in the universe unchanged or increasing that disorder 
Irreversible and Reversible Processes  •  Irreversible: effects of an irreversible process cannot be undone (most of natural processes)  •  Reversible: process goes forward and backward (changing states of matter)  Occurs at fixed temperatures and pressure  Order and Disorder  •  Entropy: the amount of disorder in a system  The higher the temperature, the more entropy (greater distribution of speeds)  The law of Increasing Disorder  •  An irreversible process increases total entropy in the universe, but reversible processes do not.  •  Chemical potential energy and macroscopic kinetic energy are most ordered.   •  When it comes to energy conversion, law of increasing entropy explains that some of that energy 
is lost to heat in the process.  
Energy Conservation and Social Issues  •  If you want to convert energy from a disordered form to a more ordered form, some of that 
energy is lost to an even greater disordered form while the rest is ordered 
•  Increasing disorder/ every irreversible action decreases the universe's useful energy.     

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School: Brigham Young University
Department: OTHER
Course: Physical Science
Professor: Patricia Ackroyd
Term: Spring 2017
Tags: entropy
Name: Chapter 18, Week 10 Notes
Description: The Law of Increasing Disorder
Uploaded: 11/06/2017
1 Pages 14 Views 11 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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