Molecular formulae

Categorize the following formulas into the following, and fill out the attached chart below as directed:

Ionic or molecular compounds
Molecular compounds: Are there any prefixes needed? List on the chart.
Ionic compounds: Which ones need Roman numerals? Why?
On the chart, indicate which ones have polyatomic ion. Are they cations or anions?
Are there any acids or bases? Mark the chart.
Are the acids binary acids or oxyacid? Mark the chart.
Check the box if you have a strong acid or a strong base.

Why do you think it is important to understand how to write formulas? How will this knowledge help you in your healthcare career?