It was April 24th and we did a science experiment. It involved vinegar, baking powder, balloons, and a water bottle. We put baking powder in the balloon and vinegar in the water bottle we then we put the balloon on the water bottle. After that me and my 2 science partner pushed the balloon up so it dumped the baking powder over and into the bottle it started to rise and it was cold at the bottom where it poured. :p