Middle School Chemistry Review/Study Guide. This packet is heavy on the periodic table: how to read it, groups, periods, valance electrons, reactivity, chemical properties, and properties of metals, nonmetals, metalloids. This would be good for 6th or 8th grade review of chemistry. This does not have any APE MANN work, Lewis dot structure, or balancing this is mostly vocab work and reading the periodic table and how it is organized.