After a lovely morning at K & H's house yesterday, when H excitedly showed Emily what happens when you mix Bicarbonate of Soda with Vinegar, we have been doing more of the same today.
We mixed vinegar and Bicarb again and made a lovely foamy mess.
Then we did the cleaner but noisier version with citric acid and Bicarb. Emily found this all very fascinating.
We spoke about how mixing chemicals together often makes different chemicals - in this case carbon dioxide. We then looked at how trees take in Carbon dioxide and give off Oxygen, whereas animals do it the other way round. We spoke about the composition of air. We then talked about how chemicals have symbols and we don't always write out the whole name; O for oxygen for example.
Finally we made a bath bomb, which we will be testing later.
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