Freon represents a variety of chlorofluorocarbons (CFCs), which contain elements such as carbon and fluorine as well as other gases. Freons are colorless, odorless, non-flammable, non-corrosive gases/liquids that are hazardous to the environment.
Mercury, also known as quicksilver, is a chemical element found on the periodic table. It is one of only five elements that are liquid at room temperature. Mercury is a heavy, silvery, transition metal, often found in household, medical and industrial products. The ability to easily bond with other elements and its versatility make mercury incredibly useful. Review the Mercury in the home resource guide.