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09:14 Writing ionic formulas Writing ionic formulas	Writing ionic formulas ionic compounds polyatomic ions criss-cross method subscripts science From kfarnell on September 9th, 2019 0 likes 0 plays
10:04 Unit 5, Part 2 Atomic Chemistry Video 3 Valence… Unit 5, Part 2 Atomic Chemistry Video 3 Valence Electrons, Lewis Dot, Bohr Model, Criss-Cross Method	Unit 5, Part 2 Atomic Chemistry Video 3 Valence Electrons, Lewis Dot, Bohr Model, Criss-Cross Method brunosaurus physical science ms. bruno chemistry unit 5 part 2 atomic chemistry video 3 valence electrons lewis dot bohr model criss-cross method science From brunosaurus on September 4th, 2019 0 likes 5 plays