This is a classic investigation into the effect of different liquids on your teeth. If you can’t get easy to access to some teeth (ask your local tooth-fairy) – then an eggshell can provide a simple stand-in. Clean (cooked & boiled) chicken bones can...
Did you know that the humble red cabbage can be used to make an indicator solution which can test whether chemicals are acids or alkalis? Make your own and test it with a class! You can make the indicator in advance at home and bring it in. Or the children could have...
