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.
Hudson, Quebec. Hudson, Quebec, Canada, is an off-island suburb of Montreal, with a population of 5,135 (2006 Census). It is located on the south-west bank of the lower Ottawa River, in Vaudreuil-Soulanges Regional County Municipality.