This afternoon, in topic we learnt about irreversible and reversible changes. To start of the lesson we did an irreversible potion by mixing vinegar and milk together to make a modelling clay sort of like play dough. Then we got sorted into four groups two sets of three and two sets of four. On a sheet in our groups we had to fill out answer and predict what might happen most of us predicted it would foam fizz and erupt. We used jugs and spoons for our equipment. We put vinegar in pots and filled it up (1tsp) with bicarbonate of soda. The reaction happened and it erupted out of some jugs.