Irreversible volcano.

Today in room 12  my class  and I were observing our teacher  make a fake volcano erupt.The ingredients that our teacher used were  water , dish soap,vinegar, food colouring and baking soda. How it reacted was amazing and surprising it was also cool how it was made to burst. I felt good to know how to make the volcano erupt but also good how we learnt about chemical change and it means you can not turn things back to its normal state.Nothing much happened but after we put in the baking soda it erupted.