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.
Best Answer: It would depend on your definition of a chemical. A chemical is: a substance produced by or used in a chemical process.. And, water is a chemical because it is be used in chemical reactions such as neutralization, redox, etc. I believe what you're asking though is if water is a chemical substance: a material with a definite chemical composition.. Water is also a chemical composition because of its electron configuration in its valence shell which defines its chemical properties. Source(s): Definition of Chemical: http://dictionary.reference.com/browse/c... Definition of Chemical Substance: http://en.wikipedia.org/wiki/Chemical.