Thermal Energy & Heat Ch. 16 Intro to Physics
Thermal Energy and Matter Total energy particles Mass, temp., phase
Heat Transfer thermal energy How flow? Temperature KE Collisions
Heat Transfer Conduction No transfer matter Particle collision Metals Free flowing electrons Conductor Insulator
Heat Transfer Convection Movement of particles in fluids Currents
Heat Transfer Radiation Waves through space
Thermodynamics 1st Law 2nd Law 3rd Law Energy conserved Heat flow from Hot to cold unless work done to force Can’t get as much energy out as put in Entropy universe increasing 3rd Law Entropy of a perfect crystal at 0 K is 0 "It is impossible by any procedure, no matter how idealized, to reduce the temperature of any system to zero temperature in a finite number of finite operations".[
Thermal Expansion and Contraction
Specific Heat Q = mcDT Example P. 477 Calorimeter
Heat Engines External Combustion Internal Combustion
Read Section 16.3