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.
Gratiot County, the Heart of Michigan. Welcome to the Heart of the Lower Peninsula! Our Mission. To advocate the partnership of business and community to preserve, enhance and promote those unique qualities that make Gratiot County a great place to live, work and visit.