@the.real.chemist8: ✨ Sodium and potassium both react with water, but their reactivity is very different. Sodium forms NaOH and turns thymolphthalein blue, while potassium reacts faster, produces a lilac flame 🔥💜, and turns phenolphthalein pink as KOH forms. A clear demonstration of increasing reactivity down Group 1. #TheRealChemist #chemistry #scienceexperiment #sodium #potassium