Memorize Polyatomic Ion Charges — Free Game at Study Putty

http://memorize.com/polyatomic-ions

http://quizlet.com/3404255/25-polyatomic-ions-flash-cards/

Watch GPB Chemistry video #602 – Writing Molecular Formulas and an Introduction to Organic Molecules” and take notes.

http://www.gpb.org/chemistry-physics/chemistry/602