Kestrels’ latest topic is ‘Changes in Materials’ and this week, they have been finding out what happens when certain chemicals are mixed together in a solution. They were asked to mix water with bicarbonate of soda, vinegar with water and bicarbonate of soda with vinegar.

They learnt that there is a chemical reaction with bicarbonate of soda and vinegar) Hollie certainly did when the balloon exploded from off the top of the test tube!