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- Copper Zinc voltaic cell – Demonstrate a copper/zinc voltaic cell turning a motor to show that a spontaneous reaction can be harnessed to do work.
- Electrolysis of Water – Electrolyze water (dilute Na2SO4 solution with indicator) in the Hoffman apparatus to decompose it into its component elements, hydrogen and oxygen.
- Zinc and HCl – Immerse mossy zinc in HCl (aq) and use a lighted splint to ignite the hydrogen gas produced.