Using electrolysis to generate hydrogen gas isn't just used in the International Space Station, it’s possible in your kitchen. This guided, ‘design and build’ workshop emphasises engineering habits of mind, as groups build simple electrolysis cells. Topics covered: water as a polar molecule, anions, cations, secondary reactions, hydrogen fuel cells. A teacher sheet is provided for a full walkthrough in preparation of this workshop.
Hands-on workshop, 50-60 minutes. A design and build session for classes divided into small groups, each requiring: 9v PP3 battery, disposable plastic cup, two drawing pins, salt, water, bicarb, access to a hot glue gun or sticky tape/Blu-Tack. Teacher supervision recommended.