Chemical is defined as any substance consisting of matter. Its substances exist as Liquids, Foams, Solids & Flakes, Power, Gases, etc. And may change between times and seasonal phases based on changes in temperature, pressure or application. These are many chemicals used for divers domestic and industrial applications.
Such include: Degreasers, Coolants, Sulfuric Acid (H2SO4), Propylene (C3H2), Compressed Gases- Aerosols, Dry Chemical Powder (DCP), etc.