Hello and welcome to my store! This page is an item I use with my students to reinforce the basic materials they need to know about the structure of an atom and from the periodic table. I find that by having students repeat the information, they retain and recall the information well and perform well on their assessment. In addition, students who complete this practice page are able to apply their understanding to elements that I select from the periodic table. I use this for basic review - not for advanced chemistry review. This would be best used after you have taught or reviewed the definitions for neutron, proton, electron and valence electron, as well as atomic mass and atomic number. Happy atomic structuring!