Year 5 science
This morning, we did 3 experiments to show irreversible changes. First, we made honeycomb, from sugar and syrup which reacts with bicarbonate of soda to form CO2. Then we did the classic Coke and Mentoes, followed by reacting vinegar and bicarb and containing the gas in a canister to create pressure. Some were more successful than others, but several went twice as high as the school roof!