A short article based on an extract from Topics in Safety, Topic 17 (Electricity), which is freely available to Association for Science Education (
ASE Health and Safety Group
Learn how to set up a hydrogen fuel cell by extending an activity most schools already do – the electrolysis of ‘water’.
Well, of course you know that a battery is made of cells in series, but I have just discovered a great way to show this to a class.
Entropy is more usually studied in physics and chemistry but can also be considered in biology to explain limitations of energy changes in life-pro