A few things to things to know:

The structure of an atom

Subatomic particles and their charges

Valence electrons

Bohr Diagram

Lewis Dot Structure

The importance of the periodic table of elements

What Groups represent of the periodic table of elements

Your best study guide is your ISN!!! I pulled questions right out of it. You DO NOT have to memorize the Periodic Table of Elements. But you must know the relationship between groups and valence electrons.