👉 Scored fumes refer to a type of chemical reaction or process where two reactants are brought into close contact by cutting or scoring them with a sharp tool, often resulting in an exothermic reaction that produces a visible trail of colored smoke or vapor. This phenomenon occurs because the cut surfaces increase the surface area and can create localized high temperatures, accelerating the reaction rate. The colors of the fumes depend on the specific chemicals involved; for example, copper and oxygen produce a blue-green hue, while zinc and hydrochloric acid yield a yellowish-white plume. These reactions are often used in qualitative analysis to identify substances or to visually demonstrate chemical principles in educational settings.
