Chem Tutor
Chem Tutor: Chemistry: Writing Ionic Compound Formulas
A tutorial on writing formulas for ionic compounds.
CK-12 Foundation
Ck 12: Ionic Compounds
[Free Registration/Login may be required to access all resource tools.] Students investigate ionic compounds, and learn how to write chemical formulas for them.
Utah Education Network
Uen: Forming Ionic Compounds
Students will practice making and recording observations about various compounds and their aqueous solutions, write the formulas for the compounds, then perform chemical reactions and write the names and formulas of the products.