Modern Chemistry worksheet on polyatomic ions, including definitions, naming rules, and practice exercises.

A worksheet titled "Modern Chemistry" focusing on Chapter 9: Solution Chemistry, specifically on polyatomic ions. It includes diagrams showing the formation of polyatomic ions, a table of common polyatomic ions with their names and formulas, instructions for naming compounds using polyatomic ions, and exercises to deduce formulas and name compounds based on given structures. The worksheet also features chemical structures of various ions and molecules.