Blowing Balloons

No party is complete without its fair share of balloon decorations. And to blow up so many balloons with the air in your lungs is quite a task. Thankfully balloon pumps make that job much easier on any one planning a party these days. Still here’s an interesting science project which will help you blow up balloons without using lung power.

What we need for this experiment are a couple of balloons, some dried yeast, little warm water, a heaped spoon of sugar, a clear plastic bottle and a large bowl in which the bottle can stand. Now here’s what we are going to do. Pour the dried yeast into the bottle. Fill the bottle one fourth with warm water. Add the spoonful of sugar and swirl the bottle’s contents.

Now place the balloon over the mouth of the bottle so that there are no leaks. Now pour some warm water into the large bowl. Place the bottle in the bowl of warm water and leave it on a warm windowsill. Come back in a while to see the progress. You will find that the balloon has magically filled up in your absence. The carbon dioxide from the yeast makes this happen. Now think up of a science project that will help speed up the process.