Science Is Fun By Tomas Rosko on Instagram: "The Briggs-Rauscher reaction is a classic oscillating clock reaction that cycles between colorless, amber, and deep blue, usually lasting several minutes. It involves mixing potassium iodate, malonic acid, manganese sulfate, and hydrogen peroxide with starch. The color changes result from alternating radical and non-radical reactions driven by fluctuating iodine concentrations. Reaction Mechanism: The reaction oscillates because of a competition betwe