All the support you need to join in with investigation 1, whether you are planning for your class or joining in at home
We have a full set of teaching notes to support you, as well as instructions for learners available in PDF or as PowerPoint slides for use in the classroom. Instructions for carrying out the investigation are included in both, and you may find it useful to watch this video with step-by-step guidance for doing the investigation.
To take part in investigation 1, each group will need:
Here are some frequently asked questions about this investigation. Don’t see your question here? Let us know and we will do our best to add it to the list.
Batteries don’t store electricity, they store energy. The rate at which the LED emits light depends on how quickly energy is transferred from the chemical energy store of the battery.
Yes, as long as the electrodes are made of different metals you can use almost any metal.
Yes, lemon juice works well and you could use a carbonated drink too.
You can make good batteries out of citrus fruits where the juice inside acts as the electrolyte. You can also make a battery out of a potato.
Pretty much yes, the electrolyte and materials for the electrodes vary but the basic principle is the same.
Batteries ‘run out’ when one of the chemicals taking part in the reactions has fully reacted and is no longer available.
A rechargeable battery works in the same way as a coin cell when being used (eg to light an LED). However, the chemicals inside are different. When they ‘run out’ they can be connected to a charger to reverse the chemical reactions and ‘recharge’ them.
If you make a voltaic pile with more than 10 cells it is possible to get a small electric shock from it. This is how Alessandro Volta originally measured how powerful his batteries were, by giving himself electric shocks.
Don’t hesitate to get in touch if you have any questions or problems.