a chemical that consumes or renders inactive the impurities in a mixture
existing as free, uncombined atoms
any of a number of polymers containing alternate silicon and oxygen atoms and that are fluid, resinous, rubbery, extremely stable in high temperatures, and water-repellent
a purplish-red, water-soluble powder, C20H11N2O10Na3, an azo dye used chiefly to color pharmaceuticals, food, and garments
the quantity of product formed by the interaction of two or more substances, generally expressed as a percentage