The children have been focusing on scientific enquiry this week – looking at fair and comparative tests. They got the opportunity to see that when you mix baking powder with vinegar, it causes a chemical reaction. This reaction produces carbon dioxide. The children created this chemical reaction within a plastic bottle with a balloon attached to the top. The carbon dioxide caused the balloon to inflate. The children were able to alter the variables in the experiment and compare results. For example, some children increased the amount of baking powder, whilst others increased the amount of vinegar. We had great fun observing the results. They were able to recognise that this chemical reaction was irreversible. They also applied some previously learnt vocabulary to their explanations, such as solute and solution.
Luckily, we all survived the experiment without any big explosions!
Help at home: Can yo help your child learn the science vocabulary for this half term?