Yes, in chemistry a pure substance means either an element or a compound. Thus, hydrogen, oxygen, sodium, iron, copper etc. are pure substances; and so are compounds such as water, sugar, ammonia, sodium chloride, methane, ethanol etc. A compound is composed of two or more elements combined in a fixed ratio by mass. Like an element, a compound also has a distinct chemical identity. A mixture is not a pure substance as it is a collection of two or more elements/compounds in varying ratio. Air, sea water, gasoline, vegetable oils, steel etc. are mixtures.
Hudson (CDP), Massachusetts. Hudson is a census-designated place (CDP) in the town of Hudson in Middlesex County, Massachusetts, United States. The population was 14,907 at the 2010 census.
New Hudson (GNIS FID: 633327) is a populated place located in Oakland County at latitude 42.511 and longitude -83.615. The elevation is 935 feet. New Hudson appears on the Milford U.S. Geological Survey Map. Oakland County is in the Eastern Time Zone (UTC -5 hours). Oakland County: Cities & Towns | ZIP Codes | Schools | Features (airports, churches, hospitals, etc.