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.
WYSIWYG. Ulster county sits in the heart of the fertile Hudson River Valley with the Hudson River on its eastern edge. Within its 1,161 square miles lies the Catskill Park and Forest Preserve where there are more than a quarter million acres of forever-wild woodlands.