Are you ready to wow your kids with some magical science tricks? In these two fun experiments, you’ll learn how to poke pencils through a bag of water without a leak and push a needle through a balloon without popping it—both using nothing but simple household materials.

Fill up the balloon from the syringe side and plug in the needle. Wrap up any possible place to leak with parafilm. This is how I prepare hydrogen and nitrogen balloons. We use generic rubber balloon. We usually use two hydrogen balloons for hydrogenation if running overnight.

Dive into our PrepLab series where we turn the ordinary into the extraordinary! 🧪💦 Today's experiment: a water balloon that doesn't leak, even when poked! ...

Who would have ever thought that a plastic bag, some water, and a few pencils would have adults screaming with fear? learn how to poke holes in a plastic bag filled with water without spilling a drop. Well, that’s the theory you’re going to test . . . and it’s wise to practice your liquid trick over the sink.