How well do you know the number of protons for each chemical element in the periodic table?With this Tap N' Learn game, study atomic numbers then take random quizzes to test your knowledge.Measure your savviness against players around the world with the Multiplayer mode, global Leaderboard and reap those Achievements for extra points before your friends do.Tap N' Learn keeps stats as you play, displays graphs of your progress, and fully supports Game Center. - Multiplayer mode to play against your friends or random players around the planet- Study atomic numbers, element by element- Direct element access by sorted list- Shake or double-tap to display random element- Play timed quizzes to test your abilities- Progress-based live-updating chart- Game Center integration with Leaderboards and Achievements- Add element to your 'Favorites' list for quick access Atomic Numbers - A Tap N #39; Learn Game