Loyally Serving our Customers Since 1994

Save on shipping!

$7.95 Flat-rate shipping on most orders.

My Cart

You have no items in your shopping cart.

  • Shopping at HST® pays you 5% back. Go on, reward yourself! Details.

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

    How To Make Slime

    Homemade Slime

    Pin It

    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:

« Previous Article: Simple Machines Science Projects

Next Article: Thinking Putty Activities + Video »

« Previous Article: Learn About Gears

Next Article: Animal Tracks Worksheet »


By: Tanisha J. (TJ)
Date: May 18, 2015

This is a great chemical reaction project that easily got me an A. Thank you!

By: lalal
Date: May 15, 2015

I’m trying to do this project for my 5th grade project!!!!!!!!!!!!☺☺☺☺☺

By: alexis
Date: May 06, 2015

This is a super cool project. This is my second time trying and it turned out great. DONT FORGET THE SECOND STEP, its a hot mess. Thank you!!

By: Natalie
Date: May 05, 2015

I am going to use this for a school project and it is going to be the best presentation ever because of you thank you for this recipe.

By: Abigail Crews
Date: May 04, 2015

what is it called though?

By: Tarik denmark
Date: Apr 30, 2015

It was really helpful Lol

By: baby girl
Date: Apr 23, 2015

i like this project but how much time does it take

Date: Apr 21, 2015

This is awesome I made this as 2 projects for two classes and got an A+.
AHHH whooohho

By: kyle
Date: Apr 18, 2015

What do you put in there if we dont have borax or if we cant find glue?

By: billy
Date: Apr 16, 2015

gg bro you are so cool !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!