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Home / Science projects / Slime Recipes
  • Slime Recipes

    Slime Recipes

    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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Comments




By: Kelly
Date: Oct 22, 2014

cold water or warm water? I tried this today and it didnt work…it ended up being a sloppy load of water. HELP?


By: Wren
Date: Oct 20, 2014

Does it melt if not refrigerated?


By: Nic
Date: Oct 10, 2014

Further to previous comment, I am adding 3 grams of PVA powder and 1 gram of borax in a jar and mixing well. Then I add 1 cup of water and shake for a minute.  As i mentioned slime comes out like regular slime but starts to get brittle after playing with it for a while.


By: Nic
Date: Oct 10, 2014

I am attempting to make slime using borax and powdered PVA glue.
I am finding it hard to get the right ratio of elements and although the consistency of the slime can be altered with water the slime becomes brittle and breaks when you pull it apart quickly, it also leaves crumbs that come away when kneading it.
I guess I need to start with the right ratio for PVA and water first. Any ideas??


By: nix
Date: Oct 02, 2014

If you live in another country(Australia) what glue do we use, as we don’t have Elmer products here


By: rebecca
Date: Sep 25, 2014

Didnt work waste of miterials


By: Jardindejulie
Date: May 29, 2014

WOW! Incredible slime! It was easy to do, simple, fast ans FUNTASTIC!
It worked perfect with à White Lepage Glue.

thank you!


By: Daria
Date: May 28, 2014

Wonderful just the thing I needed. Thanks