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.
ARSENIC, NITRATE, AND CHLORIDE IN GROUNDWATER, COMMERCE TOWNSHIP, OAKLAND COUNTY, MICHIGAN Protection Agency. The maps were based on historical data from records compiled by the Michigan Department of Environmental Quality (MDEQ). The USGS collected and analyzed samples to test the water quality in a number of these