This download is a set of 15 vocabulary word cards that have a matching picture and definition. The words included are: atom, atomic mass, atomic number, electron, electron cloud, neutron, proton, valence electron, metalloid, non-metal, group, period, nucleus, element, metals.This is a great matching activity to have to help students retain information about the basic atomic structure and certain elements to the periodic table. This activity is aligned to Science TEKS 8.5 A, 8.5 B, and 8.5 C.