Energy and Phase Changes Overview

In this unit we have been really stressing the difference between intermolecular and intramolecular forces. Intra- occurs WITHIN a molecule, while inter- occurs between to neighboring molecules. Here is a link that elaborates in the differences between the two: https://www.khanacademy.org/test-prep/mcat/chemical-processes/covalent-bonds/a/intramolecular-and-intermolecular-forces

Aside from just the basics, there are two kinds of intramolecular forces: covalent and ionic. For intermolecular forces there are many more different kinds. Here are a couple links and an image that hopefully simplify things for you: http://chemwiki.ucdavis.edu/Core/Physical_Chemistry/Physical_Properties_of_Matter/Atomic_and_Molecular_Properties/Intermolecular_Forces/Overview_of_Intermolecular_Forces
http://chemed.chem.purdue.edu/genchem/topicreview/bp/intermol/intermol.html

Here is a summary of the different types of Intermolecular Forces and what makes up each one.

Here is a diagram that shows how phase changes occur when the temperature changes.