You should be able to explain how physical properties such as boiling points depend on the types of inter-particle forces present.  Read the example in your text, p.259-260, and consider your answers to p.260#2-5 from yesterday.  These are the type of problem we worked on in class.  Read p.262-263 to help with explaining other physical properties.
Homework:  p.264 #9, 11, 12 and p.266 #1
                   note that ethanol is CH3-CH2-OH



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