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 is a town in Middlesex County, Massachusetts, United States. Before its incorporation as a town in 1866, Hudson was a neighborhood and unincorporated village within the town of Marlborough, Massachusetts, and was known as Feltonville, and before that, known as Eastborough. From around 1850 until the last shoe factory burned down in 1968, Hudson was known as a shoe town..