Worksheets and lesson ideas to challenge students aged 11 to 16 to think hard about electrolysis (GCSE and Key Stage 3)
Electrolysis, the splitting apart of a compound using electricity, is an incredible process. Students are amazed that by simply passing electricity through molten NaCl you can produce the metal sodium and the toxic gas chlorine – neither of which resemble the white solid you started with. Electrolysis of molten lead bromide works well in the classroom – use a fume cupboard.
Using the teaching resources and worksheets below, students build a moving model to show what is happening to the electrons and ions during electrolysis.
Creating a model of electrolysis
GCSE activity where students model electrolysis of molten sodium chloride. Students use success criteria on this worksheet and a blank template of an electrolysis circuit to model what is happening to the ions during electrolysis using Plasticine. (PDF)
Click here to go to the page on the extraction of metals.