What's Happening in Erie County. 1  September 1 - September 30 : Agricultural Districts Open Enrollment Period. 2  September 4 : Erie County Government offices are closed today. 3  September 5 : Justice Assistance Grant (JAG) Public Notification - Fiscal Year 2017.
Definition. 1  As a noun, the common definition of chemical is a substance that is produced or used in a process (reaction) involving changes to atoms or molecules. 2  As an adjective, chemical means of or pertaining to chemistry.
Medicinal Chemistry is the science of design and chemical synthesis focusing mainly on small organic molecules and their development of pharmaceutical agents, or bio-active molecules (drugs). Pharmaceutical Chemistry is the same plus the science of pharmaceutical and biomedical analysis to the synthesized agents.