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Home / Science projects / How To Make Slime
  • How To Make Slime

    How To Make Slime

    Homemade Slime

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    This is a fun and easy slime to make. Make it with white glue for opaque slime, or glue gel for translucent slime.

    What You Need:

    • Elmer's white glue or Elmer's school glue gel
    • Borax (find in the laundry detergent aisle of the store)
    • Water
    • Two bowls
    • Food coloring (optional)

    What You Do:

    1. In one bowl mix 1/2 cup (4 oz) glue and 1/2 cup water. Add food coloring if you want colored slime.
    2. In the other bowl, mix 1 teaspoon borax with 1 cup water until the borax is dissolved.
    3. Add the glue mixture to the borax solution, stirring slowly.
    4. The slime will begin to form immediately; stir as much as you can, then dig in and knead it with your hands until it gets less sticky. (No one makes slime without getting a little messy!) Don't worry about any leftover water in the bowl; just pour it out.

    What Happened:

    The glue has an ingredient called polyvinyl acetate, which is a liquid polymer. The borax links the polyvinyl acetate molecules to each other, creating one large, flexible polymer. This kind of slime will get stiffer and more like putty the more you play with it.

    Store it in a plastic bag in the fridge, to keep it from growing mold.

    Super Slime

    This slime is similar to the one above, but creates a less rubbery and more transparent slime. This is the real gooey deal! (This slime is non-toxic, but still keep these chemicals away from unsupervised children and wash your hands after playing with the slime.)

    What You Need:

    What You Do:

    1. Make a 4% solution of polyvinyl alcohol: Stir 1.5 teaspoons (approx. 4g) of PVA into 1/2 C (approx 100 ml) of water in a large microwave-safe bowl. Cover the bowl and microwave for 1 minute, then stir. Microwave another 30 seconds and stir. Continue until all the PVA is dissolved. A slight film may have formed on top; you can remove that with a spoon. You can add food coloring if you want colored slime. Allow the solution to cool.
    2. Make a 4% borax solution by stirring a little less than 2 teaspoons (approx. 4g) of Borax into 1/2 cup of water.
    3. Pour the cooled PVA solution into a ziplock bag and add 2 teaspoons (10ml) of the borax solution.
    4. Zip the bag and knead it until the chemicals are mixed into slime. Then scoop it out and play with it. 

    What Happened:

    While water is a liquid made up of individual H2O molecules, polyvinyl alcohol is formed of long chains of connected molecules, making it a liquid polymer. (The term polymer comes from the words for "many parts.") The borax acts as a "cross-linker," linking the individual PVA chains to each other so they connect to form a blob of slime. It does this linking job when the borax molecules form hydrogen bonds with molecules present in the PVA chains. (The partial positive charge of hydrogen atoms attracts the partial negative charge of oxygen atoms.) Since hydrogen bonds are weak, they can break and reform as you play with the slime or let it ooze on a flat surface.

    Your slime will last for a while if you seal it in a plastic bag and keep it in the fridge.

    Other fun home recipes:

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By: Eva nann
Date: Sep 30, 2015

A really good recipe for making home made slime!

By: Alex
Date: Sep 13, 2015

Becky or HTS, did you guys have any luck with your carpet?

Anyone else have suggestions for removing it from carpet and clothes?

By: zak
Date: Sep 12, 2015

thanks guys it really worked!

By: lillie schild
Date: Aug 26, 2015

i think that the slime was a great idea

By: Bonnie
Date: Aug 07, 2015

It works!!! Brilliant!

By: Becky
Date: Jul 15, 2015

How can I get it out of carpet??  We made several messes.

[HST adds:  The school glue in the slime should be washable with soap and water, the label may have cleaning tips.  Use a wet cloth or sponge to soak the glue on the surface and wipe and blot until the glue is gone.  Hope this helps!]

By: Zaynah
Date: Jul 07, 2015

Do you have to use borox

[HST adds:  There are ways to make slime without borax - try 1/4 cup school glue and about a teaspoon of liquid laundry detergent.  Mix well until slime forms, adding a little bit more detergent if its too sticky.  Not all brands of detergent will work so you may need to experiment.  Or make slime by combining two parts cornstarch to one part very warm water and mixing with your hands.  Hope this helps!]

By: ieman
Date: Jun 28, 2015


By: Haley
Date: Jun 22, 2015

Can u use just any regular laundry soap?

By: abigail
Date: Jun 13, 2015

Sounds simple cuz only very few ingredients are needed