This project investigates how alcohol molecules modulate the oscillation period of the Belousov–Zhabotinsky (BZ) reaction. The classic Oregonator model (dimensionless FKN scheme) was used to simulate how changes in [H+] and [BrO3⁻] affect the oscillation period. We recorded the redox color oscillations, measuring the period , amplitude, and lifetime under each condition. Results show that adding any alcohol shortens the oscillation period relative to a water-only control. Under fixed condition, straight-chain alcohols had a stronger effect than branched ones. Polyhydroxy alcohols also significantly reduced T. At high alcohol concentrations or with bulky branched alcohols, the oscillations were damped and eventually ceased. Arrhenius plots were linear, yielding apparent activation energy (Ea). The Ea values were lower when alcohols were present than in pure-water controls. These results support two concurrent mechanisms: (H1) hydrogen-bonding by linear and polyol alcohols reduces free [H+] and slows proton-involved steps; (H2) alcohols form hydrogen bonds or complexes with bromine intermediates (HOBr, Br2), inhibiting the autocatalytic cycle. Adding fresh malonic acid (the organic substrate) and catalyst to spent mixtures reinitiated oscillations (with longer periods).