Lecture 6

Topic(s)	Temperature The laws of thermodynamics Specific heat Phase changes Transfer of heat energy Thermal Expansion Heat engines and refrigerators Entropy and disorder
Reading List	Pages 247-285
Objectives	Define heat Understand how the zeroth law of thermodynamics applies to thermometers Discuss the significance of absolute zero Understand the relationship between temperature and molecular motion Be able to describe the processes that occur when a substance - like water - melts or freezes Be able to describe the transfer of heat energy by convection, conduction and radiation Be able to describe what happens to an object as its temperature changes Know what is meant by the term "thermal reservoir" Know how to idealize a heat engine with a schematic diagram (like that on page 239) Understand the conservation of energy in heat engines Be able to define the efficiency of a heat engine Understand how a refrigerator is a heat engine "operated backwards" Describe how entropy is related to the order of a system Be able to discuss the "arrow of time" and its relation to entropy Be able to state the second law of thermodynamics for heat engines, refrigerators, and entropy
Homework	Chapter 13 Questions: 1, 6, 11, 14, 16, 17, 24, 26, 34, 51 Chapter 14 Questions: 1, 5, 7, 12, 16, 23, 25, 31, 35, 42 Chapter 13 Exercises: 1, 2, 3, 7, 10, 12, 17 Chapter 14 Exercises: 1, 6, 10