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Once you learn the science behind this leak-proof bag experiment, you’ll be ready to poke holesleak proof bag experiment in a bag full of water while holding it over somebody’s head! It’s the perfect compliment to our 30 Science Experiments you can find in our shop!

How do You Make a Leak-Proof Bag? Fill a plastic Ziplock bag about 3/4 full with water. Stick a few sharp skewers through the bag one by one. Watch in amazement as your punctured bag does not leak! Slowly pull the skewers or pencils out of the bag to see what happens!

This science experiment demonstrates how polymer chains work, and it looks just like magic to little ones. Why won’t the bag leak when it has huge holes in it? Kids will love this mixture of messy play and science and it’s perfect for the combination of curious kids and a warm afternoon.

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