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.
Counties adjacent to Hudson are New York County, New York and Kings County, New York to the east; Essex County, New Jersey and Union County, New Jersey to west; Richmond County, New York to the south; and Bergen County, New Jersey, the only one with which it shares a land border, to the north and west.