Entertain your guests with this magic balloon trick. Perfect for a magic or a science party. Easy for you to pull off, too. For reasons I can’t explain, this eHow video wouldn’t embed, so click here to check it out and see how easily this can be done.
All you need for this trick is the balloon, a bottle with a lip the balloon can hold on to, baking soda and white vinegar. Try to use a small enough bottle that your hand will hide most of the body of the bottle from your audience, hiding the ‘magic’.
Ahead of time put two spoonfuls of baking soda into the balloon and fill your bottle with the vinegar– a funnel is handy for both tasks. Watch the video and you’ll get a feel for how much vinegar you need – about 100 ml.
At show time, you can spice up your delivery introducing the invisible genie that’s in your bottle, and that he’ll be blowing up the balloon to show everybody that he’s really in there. Attach the balloon to the bottle top being careful to keep the balloon drooping over the side so the kids don’t know there’s anything in the balloon. With the bottle as hidden as possible by your hand, pull the the balloon upright so the baking soda drops into the vinegar, give the bottle a shake to distract the audience, and VOILA, the balloon will inflate as the vinegar/baking soda makes carbon dioxide.
Simple science to delight your young audience; probably works best with younger children like preschoolers or early elementary school aged kids 5 or 6 years old. Who says you need to hire a magician to entertain them!