Dancing Flames

 Aluminium’s reactivity aluminium’s protective oxide layer can make it difficult to see its true reactivity in the context of metals reacting with aqueous solutions. (Do not try to recreate experiment without the presence of a trained professional) Procedure: Dissolve copper(II) chloride in the hydrochloric acid and set the solution aside. Take a piece of aluminium foil approximately the width of the base of the conical flask and approximately 20 cm long