Leak Proof Bag Experiment! Video Quiz

What is the first step of the experiment?

• Fill bag to the top with water.

• Fill the bag with shaving cream.

• Fill the bag half way up with water.

• Fill the bag half way up with shaving cream.

The bag leaks after poking a sharp pencil through the bag.

• True

• False

Why didn't water leak after putting the pencil through the bag?

• It did leak!

• Polymers, long chains of molecules that bend and stretch, sealed around the pencil stopping the bag from leaking.

• Protein, long chains of molecules that bend and stretch, sealed around the pencil stopping the bag from leaking.

• It's magic!