The Colourful milk display involves dropping food colouring into whole milk and adding washing up liquid but if you want to know about the Science involved then you'd better go and see Kerry at Multiple Mummy where she explains it perfectly! Spiderman was a little heavy handed with the washing up liquid but I think we still achieved the same effect.
Next we tried the 'Magic Balloon' using an empty bottle, some vinegar, bicarb of soda and a balloon. It didn't quite go to plan at first, but just like the volcano once we'd added more vinegar it did what it was supposed to do. Again if you want to read the Science part then head over to Emma at Mummy Mummy Mum! where she will explain.