4B have been experimenting with the properties of egg shells which are grainy in texture and contain as many as 17,000 tiny pores which air and moisture can pass through. But what happens to the calcium carbonate crystals when soaked in white vinegar is quite extraordinary! The chemical reaction turns the shell to a rubber like texture. See the experiment of the bouncing egg below. The children bounced the egg from heights in 5cm increments at a time up to 60cm before the egg................ !!
All children love making potions! 4B had great fun making some weird and wonderful ones
as part of their topic work