Thermodynamics: 
                  Study of heat changes.
                Temperature  (T):
                  Proportional to the average kinetic energy of the  particles.  The higher the temperature  the faster the molecules move.
                 Zeroth  Law of Thermodynamics: 
                  Objects in thermal equilibrium are at the same temperature.  Objects in contact will eventually come to thermal equilibrium.
                 1st  Law of Thermodynamics (Law of Conservation of Energy): 
                  Energy cannot be created nor destroyed in a chemical or  physical process.
                 Calorimetry: 
                  Energy lost/gained from the system is equal & opposite to  that lost/gaines from the surroundings
                 Entropy  (S): 
                  Disorder or random-ness
                2nd  Law of Thermodynamics: 
                  The total entropy of the universe can never decrease.