- The worksheet provides the correct chemical formulas for various ionic compounds based on their constituent ions.
- For each compound, the charges of the cation and anion are balanced to ensure the overall compound is electrically neutral.
- Subscripts in the formulas indicate the number of each ion needed to achieve charge balance; if no subscript is written, it is understood to be 1.
- Polyatomic ions (like SO₄²⁻, NO₃⁻, NH₄⁺) are treated as single units, and parentheses are used when more than one polyatomic ion is needed.
- The answers are organized into two tables: Part A covers common binary ionic compounds, and Part B includes compounds with polyatomic ions and some transition metals requiring Roman numerals for variable charge.
Parent Tip: Review the logic above to help your child master the concept of formula writing worksheet.
