This lab activity is a great introduction to atomic structure. It begins with a short pre-laboratory reading and vocabulary activity. Then students work through the lab constructing models, answering questions, and checking their progress with the teacher at various points. The lab is easy for students to understand, yet challenges them by teaching new concepts as they work through the material. This lab includes: atoms, isotopes, ground state and excited state, and ions. Contains: title page, teacher guide, six-page lab, six-page answer key.