 The study of and its transformation into  Looking at the macroscopic level of how heat affects our lives  KEY FOUNDATIONAL POINTS

 of temperature and of a substance … continues to increase with temperature without an end in sight  can be extracted  of temperature possible  On Celsius scale, absolute zero =

 On Kelvin scale,  Kelvin (K) is scale (units) used in  Ice  Water

 the flow of, it is just the flow of  Combine that with the law of energy conservation to derive first law 

 System =  Must always define the in order to identify its and its  Heat of the system  Looking at an engine Some energy is converted to Some energy converted to

 if work is done i.e. compression Internal energy will Temperature  if work is done i.e. expanding against surroundings Internal energy will Temperature

 Process of compression or expansion of a gas so that a system change of volume work rapidly to prevent of system  Let’s look at Figure 24.4 on page 358 An automobile engine is an excellent example of this process (and the book has a pretty diagram for us )

 If work done on a gas by Gas  gets  If gas adiabatically, work is done on its surroundings Internal energy  gets

 Air temperature may be changed by  First law of thermodynamics in terms of

 p357 doing physics  Read the examples on pages 359 – 360  p368 RQ #3,5,7