Sometimes science can appear a bit magical don’t you think! I bet you have seen this leakproof pencil bag science experiment trick before but we love to try cool science and STEM here too! So we set up the leakproof pencil bag science experiment to see if we could actually pull it off without getting soaked. Did we?

MAGICAL LEAKPROOF PENCIL BAG SCIENCE EXPERIMENT!

Sometimes science can appear a bit magical don't you think! I bet you have seen this leakproof pencil bag science experiment trick before but we love to try cool science and STEM here too! So we set up the leakproof pencil bag science experiment to see if we could actually pull it off without getting soaked. Did we?

How do you even go about describing what you are looking for to google? Magical water bag and pencil science trick thingy?

Or how about another phrase: you know where you poke a bunch of pencils into a bag of water and nothing leaks out? So I am calling it my leakproof pencil bag science activity! A little clumsy but you get the idea!

SIMPLE CHEMISTRY WITH POLYMERS

Let’s keep it basic for our younger or junior scientists! Chemistry is all about the way different materials are put together, and how they are made up including atoms and molecules. That’s what our leakproof pencil bag science activity is going to show us!

It’s also how these materials act under different conditions and go through changes. Chemistry is a base for physics, so you will see overlap!

What might you experiment with in chemistry? Classically we think of a mad scientist and lots of bubbling beakers, and yes there are reactions between common acids and bases to enjoy! Also, chemistry involves matter, changes, solutions, and the list goes on and on.

Of course, your neighbors might think you are a little mad when you go to set this science experiment up!

Looking for easy science process information and free journal page? 

We have you covered…

Click below to get your quick and easy science activities. 

WHY IS SCIENCE FOR KIDS SO IMPORTANT?

Kids are curious and always looking to explore, discover, check out, and experiment to find out why things do what they do, move as they move, or change as they change! Indoors or outdoors, science is amazing!

Science surrounds us, inside and out. Kids love checking things out with magnifying glasses, creating chemical reactions with kitchen ingredients, and of course exploring stored energy! They have a lot of that! Check out 35+ awesome science projects to get started.

This particular science project involves a bit of mystery and that’s exactly why kids will have a blast trying it out, testing it, and figuring out what’s going on?

YOU WILL NEED:

  • Sharpened Pencils
  • Zip Top Plastic Gallon Bag
  • Water

sharpened pencils and bag filled with water on table

HOW TO SET UP A LEAK-PROOF BAG

Just a note that this activity might be best for a warm day outside! If not, make sure you are over a sink or tub and have some towels handy.

  • Make sure to start with freshly sharpened pencils if you can!
  • Fill your plastic bag with water and seal tightly.
  • Take a sharpened pencil and poke through the bag! Don’t hesitate or you may find it will leak a bit.
  • Try it again! How many pencils can you put through the bag? Make a guess and see what happens!

PENCIL BAG SCIENCE

This leakproof pencil bag science experiment may look a lot like magic, but it’s also cool chemistry! What’s going on between the water, the plastic bag, and the sharpened pencils.

The plastic bag is made up of polymers which are long strands or chains of molecules. When the sharpened pencil pushes through the plastic bag, it’s actually pushing through the polymer chains.

The chains or strands are pushed aside by the pointy pencil but then re-seal themselves around the pencil preventing water from leaking out. See what happens when you try to push a dull or unsharpened pencil through!


Now of course when you remove the pencils the holes will be left and the water will definitely leak out, everywhere. Also, make sure not to push the pencils all the way through or you will have holes and leaks too.

MORE FUN WATER SCIENCE IDEAS TO TRY:

What dissolves in water?

How do leaves drink?

Walking water!

Saltwater density?

Sugar water rainbow

MORE FUN CHEMISTRY IDEAS

Homemade slime recipes

Make “plastic” from milk and vinegar

Erupting lemon 

Cabbage PH

Grow crystals

 

FUN LEAKPROOF PENCIL BAG SCIENCE EXPERIMENT FOR KIDS!

If you love our science activities as much as we do, you will find plenty more simple and budget-friendly science ideas below that pack a learning punch. Click on the photo below or blue link.

Looking for easy science process information and free journal page? 

We have you covered…

Click below to get your quick and easy science activities.