Last week we made some rather revolting lemonade. If I’m honest, calling it lemonade is a stretch. It was fizzy and it has lemon in it. ‘Nuff said!
I set the children two Incr-Edible Science tasks.
The first was to design a method which would use the chemistry we had learnt to produce more palatable lemonade. Thomas chose this one. He knew it was the salt (Sodium Citrate) which gave the horrid taste to the lemonade. He deduced that if he could make apparatus which allowed the CO2 into the lemonade but kept everything else away from the lemonade, it would result in fizz and no bitterness. He decided to play around with some ideas small-scale before he tried for a whole glass, stating he didn’t want to waste too much lemon juice. Here is his first attempt:
T11 was utterly undeterred, and enthusiastically made some changes to his design:
Yesterday evening I had him do it large-scale with the hopes of achieving a glass of fizzy lemonade. Unbeknown to me, he had been playing about with his design in order to improve on it:
The second quest was to blow up a balloon using what they had learnt about the reaction between acid and alkaline:
I asked if she could figure a way to do it which did not require my help. She thought and came up with putting the Bicarb in the balloon before attaching it to a bottle with vinegar in. Can I tell you how proud I am of her? Here is a girl who really struggles with maths, and who seems a complete natural at chemistry. It is wonderful to see!