Royal Society of Chemistry
Royal Society of Chemistry: The Periodic Table of Data
An interactive Periodic Table of Elements which also serves as a visual database of each element's physical and thermochemical properties. Online activities include virtual graphing, tables of data, energy level diagrams, games, and more.
Thomas Jefferson National Accelerator Facility
Jefferson Lab: Periodic Elements Memorization Game
How much do you know about the chemical elements? This game will challenge you with questions about chemical symbols, names and atomic numbers.