Make your glow-in-the dark slime

Halloween is the right time to do disgusting, filthy … but also surprising things.
On this occasion, Curiokids suggests you to make glow-in-the-dark slime in complete safety.

You will need:

From 6 years

Difficulty : medium

This experience requires the help of an adult

Buy online

Let's experiment

Pour the white school glue into your bowl.

Add water and mix well.

Add a little food coloring, just enough to tint your mixture.

Now add the 1/2 tablespoon of baking soda and mix to obtain a perfectly homogeneous preparation.

Add a tablespoon of glow-in-the-dark powder or the equivalent of glow-in-the-dark paint. Mix well.

Now you will make the slime. Add 1/2 teaspoon boric acid eye solution (or contact lens solution). The slime will form instantly.

Knead your mixture with your fingers… you will obtain a quality slime very quickly.

Turn off the light and watch! Wow, it glows in the dark.

Understand the experiment

Is slime a liquid or a solid ?

Slime is a pretty amazing material. If you stretch it gently, you will get long filaments. But if you stretch it with a sharp blow, it immediately breaks like a breadstick.

The question is whether slime is a liquid or a solid.

Indeed, when you throw it on a table, it bounces back like a magic ball, keeping its shape and size.

But if you drop it into a container, it takes on the shape of the container, like water in a glass.

In reality, slime is what is called a non-Newtonian fluid.


Slime, a non-Newtonian liquid

Slime sometimes behaves like a liquid, sometimes like a solid. If you put enough pressure on it, its viscosity increases to the point that it behaves like a solid. If you don’t put any pressure on it, it will flow like a liquid.

Did you know?

Non Newtonian fluids in nature

Lava, honey, and ketchup are all examples of non-Newtonian liquids like slime.


Test different phosphorescent pigments to see which one will glow the brightest in the dark.

Did you know?

The reaction between vinegar and baking soda can be used to degrease greasy surfaces. It is a more ecological solution than the products you can find in the supermarket.


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