Colour-changing thermochromic slime

We’ve had so much fun making this amazing colour-changing thermochromic slime using thermochromic dyes, that we want you to have a go too! This is a slime that changes colour at just 27oC …and the best part is that you can now make your own colour changing slime using our Thermo Slime Kit! Read on for the discount code & watch the video too…..


You too can make colour-changing slime! Watch this….

Materials

Sciencedipity’s Thermo Slime Kit (order here)

Use discount code 25%OFFSLIME to get this kit for £15 (RRP £20)

or you can buy your own thermochromic dyes, PVA glue and slime activator.

Method

First protect the work surface with a plastic cover or work on a tray.
Add about a tablespoon (a large slosh) of the PVA glue to the bowl and stir in the bag of thermochromic powder.

Stir the dye in well, it may take a while to blend in as it can clump together at first.

Now add the activator a little at a time, until the slime started to form and pull away from the sides of the bowl.

This is when you know the slime is ready to be moulded, stretched and squished using your hands. This is the last stage of slime-making and although messy to start with, as the slime forms it comes off your hands and gets less sticky. If it doesn’t get less sticky and is still a mess all over your hands, just squirt a bit of activator directly into my hands and continue to mould your slime, you’ll feel the slime form and get less sticky. Keep doing this until you are happy with your slime. Too much activator and the slime goes hard and rubbery, so you want to add just the right amount.

Order your kit here: but remember to use discount code 25%OFFSLIME


Make thermochromic slime – the video

Lab notes

What is thermochromism?

Thermochromism is the property of certain substances to change colour when the temperature changes. A mood ring is a well known example of a temperature sensitive item. The dyes have been manufactured to change colour at a certain temperature, so for the colour changing slime we chose a dye that was sensitive to 27oC so that it would change as it warmed up in our hands. There are several useful applications for thermochromic dyes, such as thermometers and hot drink indicators. There’s the fun side too, as in jewellery, colour changing t-shirts and slime!

Want more slime recipes?

Check out our other “How To” blogs here:
Magnetic slime
Fluorescent/Hallowe’en slime
Fluffy slime

Good luck & happy sliming

If you tackle this activity at home you do so at your own risk. If you have as much fun as we did, feel free to share your pictures with us on Facebook.

Bye for now
Ruth

Chief Scientist at Sciencedipity

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