Have you heard of crunchy slime and wondered exactly what’s in it? Let’s learn how to make crunchy slime using foam beads, and I will also show you another type of crunchy slime with fishbowl beads! We have been experimenting with our crunchy slime recipes and have a few variations to share with you. Homemade slime is always an experiment when you try out new ideas!
HOW TO MAKE CRUNCHY SLIME WITH FOAM BEADS FOR TEXTURE!
Thick and moldable or oozy and slimy? It’s your choice when it’s time to learn how to make crunchy slime!
See an oozy crunchy slime vide here! We have even more slime videos here.
If you have played with store bought floam before, you are on the right path to making crunchy slime. Foam beads in either white or a rainbow of color can be added to our basic slime recipes to make an awesome floam slime.
Now, if you thought I was going to be showing you a different kind of crunchy slime with fishbowl beads, you can find our crunchy fishbowl slime recipe here!
FOAM BEADS FLOAM SLIME
For the slimes on this page we are using foam beads. There are a variety of colors and sizes to choose.
These beads can also be added to a modified slime recipe to make a stiffer and more moldable slime substance quite like Floam. You can read about both of these methods below and give each a try!
All of our cool, homemade slime recipes start with mastering any of our 4 basic slime recipes. Once you have practiced making slime, there are so many awesome ways to add texture, make it unique, and experiment!
Slime starts with understanding the slime activators and glue needed to make the slime substance. The chemical reaction between your slime activator and glue is how slime is formed. You can read more about the science behind the homemade slime below.
Making the best slime, starts with the best slime ingredients. We have a great list of recommended slime supplies to check out before getting started. Often people have slime failures because they aren’t using the right products. Ingredients matter!
Of course adding fun mix-ins is the best part of making homemade slime, and that’s what we did here. It’s time to learn how to make crunchy slime two ways: slimier and thicker!
CRUNCHY SLIME RECIPE INFORMATION
The following pictures use two of our basic recipes. For the slimier crunchy slime, I used the saline solution slime recipe. You can also use the liquid starch slime recipe and borax powder slime recipe.
For the thicker, moldable crunchy slime (floam), I used our borax powder slime recipe, but you can experiment with the saline solution slime recipe too.
Either of the two thicknesses can be made with clear or white glue. We like to use the white foam beads with food coloring and white glue, and we like to use the rainbow or colored beads with clear glue. Of course you can mix and match to make your own on of a kind slime.
CRUNCHY SLIME RECIPE SUPPLIES
Make sure to check out our recommended slime supplies list.
1/2 Cup Elmer’s PVA Washable School Glue
Slime Activator of Choice (measurements vary depending on activator)
1/2 Cup Water
1 Cup Mini Foam Beads (Large foam beads can also be used for a bit different texture)
Slime Storage Containers
HOW TO MAKE CRUNCHY SLIME
Click on the recipe button below to learn how to make each basic slime. To turn it into crunchy slime, you will add 1 cup of foam beads to any recipe during the mix-ins step. Keep reading for the thicker, moldable floam version.
Below you can see a more slimier crunchy slime using our basic recipes from above and foam beads. The more foam beads the denser the slime, so you can choose toads even less!
If you choose to use the large rainbow foam beads that often come in the slime supplies kit, you don’t need a full cup. We tried it both ways though, and it’s up to you. These do not make the moldable floam as nicely as the mini foam beads do so stick to adding them to the basic recipes.
SUPER THICK CRUNCHY SLIME ALTERNATIVE RECIPE
If you want to learn how to make crunchy slime that is super thick and moldable like floam, you want to use the borax slime recipe. We have not tested the saline solution slime recipe for this thicker version, but you can!
However, there is one change to the original borax slime recipe! The important change to the recipe is to omit the water that is first mixed with the glue. You will still mix your borax powder with water but not the glue. Simply add the foam beads directly to the 1/2 cup of glue, stir, and continue with the directions. This crunchy slime will be very stiff.
Keep in mind, the more of something you add to slime like foam beads, the denser the slime will get. This also means that it will potentially become less stretchy and oozy. Have fun and experiment with the ratio of foam beads to slime.
Check out the thicker crunchy slime below using white glue and clear glue with a mix of foam beads.
THE SCIENCE BEHIND THE CRUNCHY SLIME RECIPE
What’s the science behind the slime? The borate ions in the slime activators (sodium borate, borax powder, or boric acid) mix with the PVA (polyvinyl-acetate) glue and forms this cool stretchy substance. This is called cross linking!
The glue is a polymer and is made up of long, repeating, and identical strands or molecules. These molecules with flow past one another keeping the glue in a liquid state. Until…
When you add the borate ions to the mixture, it starts to connect these long strands together. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubberier like slime!
Picture the difference between wet spaghetti and leftover spaghetti the next day. As the slime forms the tangled molecule strands are much like the clump of spaghetti!
Is slime a liquid or solid? We call it a Non-newtonian fluid because it’s a little bit of both! Plus with adding foam beads you can test the stretchiness of the slime. Do foam beads change the viscosity?
Now you know how to make the best crunchy slime recipes out there! Mix and match colors, make it your own.
STORING YOUR CRUNCHY SLIME
Slime lasts quite awhile! I get a lot of questions regarding how I store my slime. We use reusable containers in either plastic or glass. Make sure to keep your slime clean and it will last for several weeks. I love the deli style containers in my recommended slime supplies list here.
If you want to send kids home with a bit of slime from a camp, party, or classroom project, I would suggest packages of reusable containers from the dollar store or grocery store or even Amazon. For large groups we have used condiment containers as seen here.
You will notice that overnight the foam beads will rise to the top of the slime because they are less dense then the slime and the two separate. A little extra science for you! The beads are easily incorporated back into the mixture with a little kneading!