Publishing as Benjamin Cummings. 3. A pure substance is classified as. â¢ matter with a specific and constant composition. â¢ an element when composed of one type of atom. â¢ a compound when composed of two or more. elements combined in a definite ratio. Pure Substances.
Hudson is a city in Lenawee County in the U.S. state of Michigan. The population was 2,307 at the 2010 census.
Nestled between the Catskill and Berkshire Mountains in Columbia County, Hudson is just 120 miles north of New York City, 45 miles south of Albany, and 160 miles west of Boston.