We have been incredibly impressed with the understanding and scientific explanations shown when discussing reversible and irreversible changes.  They were able to include vocabulary such as: solute, solvent, soluble and insoluble as well as discuss chemical reactions!

The children made a prediction and then we went to try it out - What would happen if vinegar was added to bicarbonate of soda?

It is clear to see how excited the children were to see the chemical reaction and particularly the mess that was created from it!  (At least we were in the woods though!)