Monster’s Inc, Ghostbusters, Purple People Eater, whichever you like, our monster slime recipe is perfect for all things gooey, monster-y, and gross. Learn how to make AMAZING stretchy slime in minutes the kids will love. This slime theme doesn’t have to be just for Halloween, you can whip up a batch of amazing monster-themed slime any day of the year using any one of our homemade slime recipes.
How To Make Monster Slime
This easy to make monster slime recipe is the perfect party activity and party favor for kids. Plus it’s fun to whip up and put together with really simple ingredients that you can pick up at the grocery store too.
Packed into little plastic condiment containers, monster slime party favor ideas are great to make and take or hand out at the end of the night.
Kick-off Halloween with an easy slime recipe! Science is full of cool ways to create including homemade Halloween slime ideas.
Slime making is even more fun when you add in creative seasonal themes, and I know kids love the novelty of theme activities. Our Monster Slime Recipe is yet another AMAZING slime recipe we can show you how to make.
Check Out More Fun Things To Do This Halloween…
- Halloween Science Experiments
- Halloween STEM Activities
- Halloween Art Projects, and Crafts Too!
- Halloween Board Games
Basic Slime Recipes
Our easy, “how to make” slime recipes show you how to master slime in 5 minutes or less! We have spent years tinkering with our favorite basic slime recipes to make sure you can make the BEST slime every time!
We believe slime shouldn’t be disappointing or frustrating! That’s why we want to take the guesswork out of making slime!
- Discover the best slime ingredients and get the right slime supplies the first time!
- Make easy slime recipes that really work!
- Achieve awesome slimy consistency the kids’ love!
Which Slime Recipe To Use?
We have several basic slime recipes that can all be used for this monster slime recipe. You decide which one works best for you depending on what slime activator you want to use. This allows for some flexibility depending on where you live in the world! Not everyone has access to the same ingredients!
Each of the basic slime recipes below have the full step by step photos, directions, and even videos to help you along the way!
- Saline Solution Slime Recipe
- Borax Slime Recipe
- Liquid Starch Slime Recipe
- Fluffy Slime Recipe
Here we use our Saline Solution Slime recipe. All you need to make this slime is clear glue, baking soda, water, and saline solution.
If you can’t get your hands on clear glue, try white PVA glue! Though your monster slime slime might be a bit more on the pastel side depending on how much food coloring you use.
Now if you don’t want to use saline solution, you can absolutely test out one of our other basic recipes using liquid starch or borax powder. We have tested all three recipes with equal success!
PinThe Science Of Slime
What’s the slime science all about? 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…
You add the borate ions to the mixture, and it then 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! Slime is a polymer.
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! Experiment with making the slime more or less viscous with varying amounts of foam beads. Can you change the density?
Did you know that slime aligns with the Next Generation Science Standards (NGSS)?
It does and that means you can use slime making activities to explore states of matter and its interactions. Find out more below…
- NGSS Kindergarten
- NGSS First Grade
- NGSS Second Grade
Helpful Slime Making Resources To Get You Started
- Slime Activator List
- What Do You Need To Make Slime
- How To Fix Sticky Slime
- How To Get Slime Out Of Clothes
- The Science of Slime
- How To Make Slime Videos
PinGet Your FREE printable slime recipes!
Monster Slime Recipe
CLICK HERE >>>Look at all our Halloween Recipes
Supplies:
- 1/2 cup of PVA Clear School Glue
- 1/2 cup of water
- 1/2 tsp baking soda
- Food Coloring and Google Eyes
- 1 tbsp of saline solution (must contain boric acid and sodium borate)
PinInstructions:
STEP 1. Start by adding your clear glue and water to a bowl and grab a mixing utensil.Mix it up and add food coloring and glitter as desired!
Save adding the google eyes till a bit later in the recipe. See below.
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PinDon’t be shy with the glitter. Check your local dollar store to stock up too!
PinSTEP 2. Add baking soda and mix well.
PinSTEP 3. Go ahead and add the google eyes now! It’s easier to mix in the baking soda well of it isn’t clinging to eyeballs!
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PinSTEP 4. Add in your slime activator (saline solution) to complete the chemical reaction you read about above in the science behind the slime section. If you scrolled past it, go back and read it with your kids!
PinWe always recommend kneading your slime well after mixing. Kneading the slime really helps to improve its consistency. The trick with saline solution slime is to squirt a few drops of solution onto your hands before picking up the slime.
You can knead the slime in the bowl before you pick it up as well. This slime is ultra stretchy but can be stickier. However, keep in mind that although adding more solution reduces the stickiness, it will create a stiffer slime.
PinMake Your Favorite Monster Slime
How about Randall from Monsters Inc or the purple people eater!
PinHere’s our blue slime. Kind of reminds me of Sully from Monster’s Inc.
PinThis one looks good for Mike from Monsters Inc or to go along with a Ghostbuster movie marathon.
PinHow To Store Slime
Slime lasts quite a while! 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.
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 size containers as seen here.
More Monster Fun Ideas
Continue the monster theme with one of these cool monster projects:
- LEGO Monsters
- Printable Monster Drawing Ideas
More Fun Slime Recipes To Try
If your kids love playing with slime, why not try more favorite slime ideas…
- Fluffy Slime
- Cloud Slime
- Clear Slime
- Glitter Slime
- Galaxy Slime
- Butter Slime
- 2 Ingredient Slime
- Magnetic Slime
Grab the Ultimate Slime Recipe Bundle
All the best homemade slime recipes in one place with plenty of fantastic extras!
What’s Included:
- The Ultimate Slime Guidecontains all the specialty recipes you or your kids want to make! You’ll find all the best tips, tricks, hints, and slime-y info in almost 100 pages!
- The Ultimate Slime Holiday Guidecovers all the best holidays and seasons with special themes and slime-y projects!
- The Ultimate Borax-FREE and Taste-Safe Slime Guideshows you how to make all the best borax-free, taste-safe, and non-toxic slimes kids love, such as marshmallow slime. These recipes do not use chemical activators such as saline solution, liquid starch, or borax powder, making them truly borax-free.
- The Ultimate Slime Coloring Bookis an easy-to-print coloring book kids will love! Color and design your favorite slimes!
- The Slime Starter Guideis a fact-filled information guide with everything you need to know to make the best slime ever!
- Slime Science Project Packhelps you turn slime-making into a science lesson!
