1) Welcome Get out your notebook/lab book to take notes on Molecular formulas 2) Class Discussion Molecular Formula notes and if time percent composition.Work on Unit 5 Worksheet 3.  We will have a board meeting tomorrow on this worksheet. 3) Homework W orksheet 3 due tomorrow before the board meeting.  Also remember your to work on your Unit 5 Objectives & Review, it is due Monday. Your test is next week on block day!!!!!!