IS II students collectively investigated how concentration affects the rate of a chemical reaction. Using acetone, HCl, iodine, and distilled water the students varied the acetone volume (5, 10, 20 mL) vs the water voume (25, 20, 10 mL) and kept the HCl and iodine at 10 mL. Results were spectacular. The students built a lab report from the ground up on Google Drive as we did the lab. Graphing will be done with Logger Pro.