Explore the science of liquid properties and make goop slime! Goop only requires two base ingredients, and there are endless ways to make it. Today, we added a few spooky elements to our slimy sensory bin to make glowing goblin goo. Read on for the full Halloween tutorial.
What is goop? Is it a liquid or a solid? That is the standing question, and the answer is that it is actually both! Goop is commonly referred to as oobleck and acts as both a liquid and a solid at the same time. How is this possible? Read on and be amazed by science!
HOW TO MAKE GLOWING GOOP FOR HALLOWEEN PLAY
Materials
- Corn starch
- Tonic water
- Halloween toys
- A black light (optional)
Method
- Begin by mixing roughly two parts corn starch with one part tonic water in a large bowl or play container.
- For point of reference we used four cups of corn starch and two cups of water. I recommend adding the water slowly and mixing, slowly adding more tonic water and mixing until the desired consistency is reached. You want the oobleck to be slime-like but mold-able.
- Add eyeballs, bugs, ghosts, wrapped candy and whatever else you might have on hand to make a good goblin GOO.
- Then, set kids loose for ultimate Halloween PLAY!
If you do not have a black light on hand you can still enjoy the fun of goblin goo! Simply use water in place of tonic in the recipe.
THE SCIENCE BEHIND THE FUN
- Why does the goop glow?
Tonic water is the "secret ingredient" that gives this recipe it's glow! Read more on why tonic water glows.
- How is the goop/oobleck able to change from a liquid to a solid?
Goop is a non-Newtonian fluid. This means that it changes consistencies under different stressors. Read more on non-Newtonian fluids.
MORE HALLOWEEN ACTIVITIES FOR KIDS
- Make Halloween slime.
- "Magically" grow a jack-o-lantern.
- Make ghost slime.
- Turn empty jars into Halloween lanterns.
- Make ghost lollipops.
- Transform paper into spooky Halloween art.
- Make mummies.
- Surprise the kids with Halloween fruit cups.
- Dig for Halloween treats in "goblin guts".
- Play and explore with Halloween sensory bags.
- Wow all ages with flying ghost rockets.
- Make Halloween hands.
- Win Halloween with these super cool hacks!
- Throw the ultimate Halloween party with these DIY games.
- Turn fall leaves into ghosts.
- Pimp out your ride with these creative Halloween trunks.
- Be the talk of the town with these genius pumpkin hacks.
- "Chill" kids out with ghost rice.
- Craft with neon pumpkin seeds.
- Celebrate as a family with these themed costume ideas.
- Turn shaving cream into icy-cold ghost paint.
- Craft ghosts that fly!
- Use science to form a jack-o-lantern.
- Give these spooky science experiments a try!
Tips:
- For the best effect you will want to use a blacklight for this activity. You can use a blacklight fixture or these super cool flashlights!
- If you do not have tonic water and would like to make goop that glows you can also use neon paint. The glowing paint that we use in our activities can be purchased on Amazon here.
Troubleshooting:
- Is your oobleck too runny? That means you added too much water, but that is ok! Simply add a bit more corn starch and mix until the desired consistency is reached.
- Is your goop not fluid? That means you need a bit more water. Just keep mixing! You will know when you have it right.
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