Key for Word Equations Worksheet

Below is the key for the "Word Equations" worksheet. A common mistake made is forgetting which elements are diatomic elements. The elements hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine all are two atom molecules when isolated alone in nature. The VODCast for the "Chemical Reactions Review" has been posted under the date Friday, February 17th, 2012. The "Chemical Reactions Review" problems are on the back of the Word Equations worksheet. Please do the example problems before class on Tuesday, February 21st, 2012. The problems that are not shown as examples will be completed by you with your work groups in class on Tuesday. After classes are complete on Tuesday, another VODCast with all of the solutions to the review will be posted. The test for the chemical reactions unit will be given on Wednesday, February 22nd, 2012.

The chapters in the book that cover this material are Chapter 6 and Chapter 7. Sections 7.4 and 7.5 will not be covered by Wednesday's test. They will be covered later in the semester.