1. Read chapter 1 (11-19)
2. Chemical Classification of Matter

HW/OWL

OWL 1.3,1.4,1.5, 1.6; several IC modules due Sunday, September 13

Pat O. sent a good answer to the average mass question.  The important thing is to recognize that the answer will only have 4 significant digits. “Hello, professor Knapp. I believe 1.008 amu would be the correct answer, out to 4 significant digits. Have a nice weekend, and see you on Monday.”

screen capture Sept 11