Chapter 17 Heat and the first law of Thermodynamics Chapter 1 7 Heat and the First Law of Thermodynamics 1. Heat and Energy Transfer, Internal Energy and Specific Heat 2. The First Law of Thermodynamics 3. Applying Ist Law of Thermodynamics 4. Molar Specific Heats for Gases, and the quipartition of energy 5. Adiabatic Expansion of a Gas
Chapter 17 Heat and the First Law of Thermodynamics Chapter 17 Heat and the First Law of Thermodynamics 1. Heat and Energy Transfer, Internal Energy and Specific Heat 2. The First Law of Thermodynamics 3. Applying 1 st Law of Thermodynamics 4. Molar Specific Heats for Gases, and the Equipartition of Energy 5. Adiabatic Expansion of a Gas
Chapter 17 Heat and the first law of Thermodynamics Heat 热量 Calorie(cal) 卡路里 Mechanical equivalent of heat热功当量 Internal energy 内能 Degrees of Freedom 自由度 diatomic molecules 双原子分子气体 monatomic molecules 单原子分子气体 polyatomic molecules 多原子分子气体 Quasi-Steady process 准静态过程
Chapter 17 Heat and the First Law of Thermodynamics Heat 热量 Calorie(Cal) 卡路里 Mechanical equivalent of heat 热功当量 Internal energy 内能 Degrees of Freedom 自由度 diatomic molecules 双原子分子气体 monatomic molecules 单原子分子气体 polyatomic molecules 多原子分子气体 Quasi-Steady Process 准静态过程
Chapter 17 Heat and the first law of Thermodynamics Isothermal( Constant-Temperature)等温 Isochoric(Constant-Volume) 等容 Isobaric( Constant-pressure 等压 Adiabatic process 绝热过程 Adiabatic Free Expansion 绝热自由膨胀 Specific heat and Molar Specific Heats 热容和摩尔热容
Chapter 17 Heat and the First Law of Thermodynamics Isothermal (Constant-Temperature) 等温 Isochoric (Constant-Volume) 等容 Isobaric (Constant-pressure) 等压 Adiabatic Process 绝热过程 Adiabatic Free Expansion 绝热自由膨胀 Specific heat and Molar Specific Heats 热容和摩尔热容
Chapter 17 Heat and the first law of Thermodynamics 817-1 Heat as Energy Transfer P404-405 I Energy and heat Heat refers to transfer of energy. Joule’ s Experiment ddl on the mechanical Falling Assess equivalent of heat weight Conclusion: a given amount of work done焦耳(Jo叫e实验 was always equivalent to a particular amount of heat input
Chapter 17 Heat and the First Law of Thermodynamics §17-1 Heat as Energy Transfer P404-405 1 Energy and heat Heat refers to a transfer of energy. Joule’s Experiment on the mechanical equivalent of heat. 焦耳(Joule)实验 1) Conclusion: A given amount of work done was always equivalent to a particular amount of heat input. Falling weight paddle
Chapter 17 Heat and the first law of Thermodynamics 2)Heat(热量Q): Heat is the energ. that is transferred between a system and its environment because of a temperature difference that exists between them. (its unit is J---Joules) O Absorbing heat: Q>0; Losing heat: Q<0 o Heat is path- dependent quantity(过程量) Heat and temperature are often confused
Chapter 17 Heat and the First Law of Thermodynamics Absorbing heat：Q>0；Losing heat：Q<0 Heat is path-dependent quantity（过程量）. 2) Heat（热量Q）： Heat is the energy that is transferred between a system and its environment because of a temperature difference that exists between them.（its unit is J---Joules） Heat and temperature are often confused