CHEMISTRY Module 1 Fundamentals of Chemistry
sites.ntc.doe.gov › partners › trCHARACTERISTICS OF ATOMS DOE-HDBK-1015/1-93 Fundamentals of Chemistry CH-01 Page 2 Rev. 0 Figure 1 Schematic of a Simple Atom (Helium) The Atom Structure All matter is composed of atoms, existing individually or in combination with each other. An atom is an extremely small electrically-neutral particle. It is the smallest unit involved in the