The children explored chemistry today by making predictions about what changes would occur when they mixed two materials together. The children selected combinations of water, milk, paint, coffee, baking powder, washing up liquid, juice or vinegar. They then combined these in a bottle and put a balloon over the top to see what might happen. We recorded our results and shared our findings. When you mix vinegar and bicarbonate of soda it bubbles and produces gases that cause the balloon to blow up! It was very exciting!