Year 5 have been studying Changing Materials and knew all about mixing vinegar with bicarbonate of soda. They had used it to blow up a balloon
So we showed them another way to have fun with this mixture that they could use for their demonstrations during the week
this is Helen's favourite - she calls it the freaky hand
We also showed them some of the super materials from our stash that change depending on temperature.
We started by closely observing what actually goes on in a handwarmer
Of course it wouldn't be a Science2U event without our wonderful hydrogel balls which this time Helen poured into our fish tank and amazingly they disappeared....until of course a very brave Joe put his hand in and found them all seemingly invisible in the water!
To finish our session we built on their knowledge of the vinegar and bicarbonate experiment by creating bath bombs where you don't use vinegar ( who want to have a bath in vinegar???) but citric acid to add that special fizz and our wonderful bubble gum fragrance which is a hit with all ages
Next we are off to Chester with a whole day of being healthy - It's All About You