As part of the outreach event, we also present a number of chemistry demonstrations before and after the student practical activities. The Royal Society of Chemistry (UK) Education website has excellent descriptions of these demonstrations and so we won’t repeat them here. The RSC website requires you to sign-up, but it is free to join, and hundreds of quality teaching and learning resources are available.
This is an excellent version of this demonstration that is at a safe scale, for indoor use (note: not in a fume hood)