ClNO₂(g): Chloronitryl (ClNO₂), symbolized by yellow jacket-wearing students at the beginning of this reaction, works together with ClNO molecules.
NO(g): Nitric oxide (NO), represented by transparent cape-wearing students acting as reactants along with ClNO molecules.
NO₂(g): Nitrogen dioxide (NO₂), characterized by red-colored student activists playing both reactant and product roles in this reaction.