H Chemistry 9.1.2020 Sep1 If you missed the notes today, here is the link to the video https://cobbk12-org.zoom.us/rec/share/2cUlE63RyDtIRqPnyVqGAK0gPYXaT6a803IY-Ppezh5zPSiPobtXrhDcFoHpikeJ 09023030-Notes-Periodic-TrendsDownload