IMF, Boiling Points and MORE!

Here are some videos about intermolecular forces:

Khan Academy Intermolecular forces http://www.youtube.com/watch?v=8qfzpJvsp04 CAUTION!!! There is an error: hydrogen fluoride is HF NOT HFL!!!  Also, the F is the negative side and the H is the positive side.

Mr. Bell's page  http://www.youtube.com/watch?v=txTzACTKZIo

University of Texas, Austin: http://www.youtube.com/watch?v=S8QsLUO_tgQ

   


Here is some information about boiling at pressures that are not 1 atm:

http://www.exploratorium.edu/mars/coldboiling.php

http://www.youtube.com/watch?v=bSNkdGaI7NA

 

The phase diagram we looked at on the board

APPLICATION:  Why do recipes have "high altitude directions" for cooking?  http://recipes.howstuffworks.com/tools-and-techniques/question63.htm

 

More about high altitude cooking http://www.thecookinginn.com/haltitude.html


Here is some information about freezing point depression and boiling point elevation:

http://www.sparknotes.com/chemistry/solutions/colligative/section1.rhtml

Think of it this way: if there are only Lathrup students leaving the school, then the percent of Lathrup students in the yard will be higher than if there are Lathrup and Southfield High students leaving the school...(no, really, think about it...)  If there are only molecules of substance X in a solution, they will have more space to leave and escape the intermolecular forces.  Any additional solvent will take up an "exit" that X might have been able to use.