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From Aaron Satterfield:
We are very excited to announce the arrival of the updated 2.0 Polyatomic Ions Quiz! You will notice a major new change now with 3 different types of quizzes to make studying for that test or quiz even easier.Need help learning your polyatomic ions? Here is the perfect app for mastering this essential chemistry skill. Features:-over 20 different polyatomic ions-3 different types of quizzes-instant answer feedback-leader board to compete with people around the world-a cheat sheet page with all the polyatomic ions featured in the quiz and their formula