Here is a nice Powerpoint summarising the main key words you need to know the definitions of. More importantly, you need to know how to apply these key words, which is something you can only learn through practice.
Here are a selection of summary sheets of key terms, as well as explanations of how and when these terms should be used. Again, should be used in conjunction with past papers completed in class.
Finally this is a checklist of all the things you are expected to be able to do prior to taking the EMPA.