This week, 5G carried out an exciting science investigation to explore what happens when vinegar (an acid) is mixed with bicarbonate of soda (an alkali)

The children added bicarbonate of soda to vinegar and observed an irreversible change taking place. A chemical reaction occurred, producing a gas called carbon dioxide. This gas took up space and caused a balloon to inflate. We discussed how this change could not be reversed.

Pupils made predictions, observed the reaction carefully, and used scientific vocabulary to explain what they saw. They also talked about how to make the investigation fair by changing only one variable at a time.

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