- On the tray, form a volcano shape around the plastic bottle leaving the top sticking out slightly
- Using the funnel, put 1 tablespoon of bicarbonate of soda into the bottle
- Add a few drops of red food colouring
- Add a few drops of washing-up liquid
- Add the vinegar, stand well back and watch the eruption!
Disclaimer: Please follow the instructions carefully. This is for your own safety and the safety of others. Do not improvise or change the quantities or actions or othe order in which each step in the experiment is listed.