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.
Rice County Minnesota. Photo: Hudson Wilson House, ca. 1876, 104 First Avenue, NW, Faribault, MN. Listed on the National Register of Historic Places in 1982. Photographed by User:Elkman (own work), 2007, [cc-by-3.0 (creativecommons.org/licenses/by/3.0)], via Wikimedia Commons, accessed April, 2014.