|  |  |  |  |  |  |  |  | 
   
    | • | Thermodynamics is
    study of energy, heat and 
 |  | 
   
    |  | work. 
 |  | 
   
    |  | 
   
    | • | As chemists we
    are interested in heat changes in 
 |  | 
   
    |  | chemical and
    physical changes. 
 |  | 
   
    |  | 
   
    | • | Aim: to predict
    whether a change (both physical 
 |  | 
   
    |  | and chemical )
    will occur spontaneously when left 
 |  | 
   
    |  | to itself--do we
    have to do anything other than mix 
 | 
   
    |  | the reactants
    together to make it occur? 
 |  |