Suggestion: Review (or re-study) polyatomic ions and go though the notes thoroughly. Note, that the list of polyatomic ions that you are to know is in the HC2 list. The other list is there for reference. Do the sample exercises, half of one section at a time, and then check your answers. If you had difficulty, print out another copy of the exercises and re-do on another day. When you think you know everything, try the Sample Test under testing conditions. Check it for yourself. If you do badly, go back to the beginning (review, study notes).
