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    Home » Holiday Science » Halloween Science » Halloween Slime

    Halloween Slime

    September 29, 2022 By Emma Vanstone 5 Comments

    This spooky slime recipe is perfect for Halloween! Stretch it, squish it, pull it or just pick the bugs out of it!

    Easy Slime Recipe for Halloween

    There are lots of different recipes on the internet for slime, but this is the one that has worked the best for us.

    Halloween slime made with no borax

    What you need to make no borax slime

    ¾ cup of PVA glue

    ¼ cup of water

    1 teaspoon bicarbonate of soda

    Food colouring

    1 tablespoon saline solution

    Glitter and other decorations – optional

    All you need to do is mix the ingredients together, adding the saline last. The mixture will start to stick together as soon as you stir in the saline solution ( slime activator ). It’s great fun to watch and do!

    Spooky Slime made with no borax
    Spooky Slime for Halloween

    Slime Challenges

    Can you mix slime colours to make a new colour? Our yellow and blue slime made green slime!

    How far can you stretch the slime?

    Can you find the perfect slime recipe by changing the amount of glue, water and baking soda?

    Green slime stretched out - slime made with no borax

    Work as a team to make a slime sheet!

    Slime teamwork - huge sheet of green slime

    The engineering of slime

    Slime is called a non-Newtonian fluid because its viscosity changes with changes in pressure or temperature. Another very simple non -Newtonian fluid can be made using just cornflour and water. This sticks together to form a solid when pressure is applied ( you squeeze it in your hands ) and flows when pressure is released.

    Using slime to learn about polymers

    Slime is a great activity for learning about polymers!

    Glue flows because the polymer chains slide over each other easily. The saline solution reacts with baking soda to form borate which forms bonds between the polymer chains of the glue. This is called cross linking and is what makes the slime mixture stick together.

    If you enjoyed this post, we’ve got lots of more easy Halloween Science Experiments and Halloween STEM Challenges for you to try.

    Easy no borax slime recipe for Halloween #Halloweenscience #slimerecipe #noboraxslime #slimeforkids

    Last Updated on September 29, 2022 by Emma Vanstone

    « Pumpkin Lava Lamps
    What happens to bones if you don’t have enough calcium? »

    Safety Notice

    Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

    These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

    Reader Interactions

    Comments

    1. Mellissa Williams

      October 29, 2018 at 2:37 pm

      What a brilliant activity to make with kids. Things like this can spark conversations about science

      Reply
    2. MissPond

      October 29, 2018 at 8:32 pm

      This looks like so much fun! As a scientist myself I’m always happy to see kids getting involved in fun science activities 🙂 Hopefully it’ll inspire some scientists of the future!

      Reply
    3. Joanne Dewberry

      November 09, 2018 at 1:38 pm

      Argh can’t stand slime!
      But this does look pretty cool and the fact you can make it wth everyday items even better

      Reply
    4. Alex Gladwin

      November 09, 2018 at 1:47 pm

      We’ve never made slime before, I didn’t realise how simple it is to do. My boys would absolutely love this! xx

      Reply
    5. Natalie Lowe Texas Nana of 9

      December 30, 2022 at 9:24 am

      I was so excited to see the post re: fireworks in a glass! I try really hard to teach my 2 younger grandchildren and let them have at fun simple science experiments. I used to make slime back 30 years ago with borax and glue. I learned something new when your reading the facts and what makes it work! We will be building fireworks in a glass on New Years Day! Might as well throw in some fun slime too! Thanks so much! I am looking forward to visiting this site often!

      Reply

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