If you love making homemade slime and dabbling in science then you will love this color changing slime recipe. We already know what great fun and science slime is to make, but we can also play around with adding different science activities too. Check out how to make this easy sun activated color changing slime by adding one special ingredient! Isn’t science cool?
COLOR CHANGING SLIME RECIPE THAT’S SUN ACTIVATED!
SLIME MAKING SUMMER SCIENCE
Talk about awesome summer science or year round science if you live somewhere tropical! Recently we made a similar UV color changing slime with sun activated beads that we had a blast with.
Then I saw sun activated pigment powder, and knew we had to try it! Even my husband had to get his hands on this one!
We used our super simple saline solution slime recipe with the addition of the one special ingredient, photo chromic powder! This one turns from pink to purple in the presence of ultraviolet rays. Wait for a bright sunny day for an amazing transformation.
Watch the saline solution slime video and find the directions for adding your sun activated pigment powder below.
MAKING YOUR HOMEMADE SLIME RECIPE
All of our holiday, seasonal, and unique slimes use one of our 4 basic slime recipes that are super easy to make! We make slime all the time, and these slimes have become our go-to favorite slime making recipes.
I will always let you know which recipe we used in our photographs, but I will also tell you which of the other basic recipes will work too! Usually you can interchange several of the recipes depending on what you have for slime supplies.
THIS SLIME: SALINE SOLUTION SLIME RECIPE
Make sure to read through our recommended slime supplies and print out a slime supplies checklist for your next trip to the store.
You can also try this color chaining slime recipe with our liquid starch slime recipe or our borax slime recipe. If you are in the UK or Canada, you will want to stick with the saline solution slime recipe (contact solution slime recipe).
COLOR CHANGING SLIME RECIPE HOW-TO
I highly suggest you read through our recommended slime recipe supplies list and our troubleshooting guide if you aren’t familiar with making slime. All you need is a bit of practice and right supplies!
You can read about the science behind the slime below as well as find all of our handy slime making resources! I will also include Amazon affiliate links at the bottom to show you what we used for this slime recipe.
Amazon affiliate links provided at the bottom of the page for your convenience.
COLOR CHANGING SLIME SUPPLIES
1/2 Cup of Elmer’s White Washable PVA School Glue
1/2 Cup of Water
1/2 tbsp of Baking Soda
1 tbsp of Saline Solution
1 tbsp of Photo Chromic Pigment Powder (as shown below)
EASY COLOR CHANGING SLIME RECIPE
Start with our super simple saline solution slime recipe that you saw int he video above. You can view the complete recipe by clicking on the black box and watch me make it live on Facebook if you prefer!
We used white PVA school glue, but you can also try clear PVA school glue as well. We used clear glue of our UV slime with the sun activated beads!
Once you have mixed your glue, water, and baking soda, you will mix in 1 tbsp of the pigment powder. Please noted that when working with pigments like this, you need to measure and mix carefully and slowly so as to not spread it all around your work area.
It will take an extra minute or two to fully incorporated the powder into your glue and water mixture so don’t get frustrated that it does not happen immediately upon adding it.
Once you add your slime activator (saline solution), the slime will come together with a nice smooth and even color like you see in the pictures below.
You will see the slime pull away from the sides and bottom of the bowl. When you feel like you have given the slime a good stir, you can knead it till perfection!
I highly suggest coating your hands with a few drops of saline solution to reduce the stickiness. Kneading in general will help with the stickiness too, so try not to keep adding more of the saline solution. The result will be a rubber like slime.
Time to take the slime outside! It would also be fun to make outside in the shade. We were super excited to watch it change color, so we didn’t want to chance a sneak preview!
TRY MORE SLIME SCIENCE: MAGNETIC SLIME
Your color changing slime recipe starts out a pretty shade of pink but just wait…
After we made the slime, we headed out to the backyard. You can see that almost immediately upon stepping out our back door, our slime was already changing color!
By the time we got our sun activated slime recipe out to the table, it was definitely activated and a very bright purple. The color changing happens very quickly so be prepared and don’t blink!
However, if you grab the slime to reveal the bottom of it, you can see that part of the slime hasn’t been exposed to the UV rays. It’s still pink! Not for long though, this slime will change immediately.
You can keep lifting the slime to reveal the non sun activated areas on the bottom!
SAVE YOUR SLIME FOR LATER!
Slime lasts quite awhile! I get a lot of questions regarding how I store my slime. We use reusable containers in either plastic or glass. Make sure to keep your slime clean and it will last for several weeks. I love the deli style containers in my recommended slime supplies list here.
Check the power of the UV rays on all kinds of days? What do you notice on cloudy rainy days? Or what do you notice when you play with the slime in the shade. Just make sure to play with slime on a table or tray outside as it can get dirty and yucky!
WHAT ARE ULTRAVIOLET RAYS?
This sun activated, ultraviolet slime needs some sunscreen! UV rays are invisible rays of energy that come directly from the sun. There are 3 types of rays A. B, and C. As harmful and damaging as the suns rays can be, they can also be healing.
The beads contain small amounts of a photo chromatic color changing pigment that reacts with the presence of ultraviolet rays. All you need is natural light!
I bet you can find some more cool ways to explore these UV color changing beads for ultraviolet rays awareness. Of course simple bracelets and necklaces can alert kids when the UV rays are strong! A great reminder to make sure you have used your sunscreen.
Make a batch of clear glue slime and white glue slime (using the same recipe) and see if there’s a difference!
SLIME RECIPE SCIENCE
We always like to include a bit of homemade slime science around here. Slime really does make for an excellent chemistry demonstration and kids love it too! Mixtures, substances, polymers, cross linking, states of matter, elasticity, and viscosity are just a few of the science concepts that can be explored with homemade slime!
What’s the science behind the slime? The borate ions in the slime activators (sodium borate, borax powder, or boric acid) mix with the PVA (polyvinyl-acetate) glue and forms this cool stretchy substance. This is called cross linking!
The glue is a polymer and is made up of long, repeating, and identical strands or molecules. These molecules with flow past one another keeping the glue in a liquid state. Until…
When you add the borate ions to the mixture, it starts to connect these long strands together. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubberier like slime!
Picture the difference between wet spaghetti and leftover spaghetti the next day. As the slime forms the tangled molecule strands are much like the clump of spaghetti!
Is slime a liquid or solid? We call it a Non-newtonian fluid because it’s a little bit of both!
This color changing slime recipe will surely be a hit this summer with the kids! Great for you summer science camp, you can make several batches and send each kid home with his or her own ultraviolet ray indicator slime!
We also have plenty of great SCIENCE activities if you need more ideas to add to your day!
AMAZING COLOR CHANGING SLIME RECIPE FOR KIDS!
MORE SLIME MAKING RESOURCES!
Everything you need to know about making slime is below! Did you know we also have fun with science activities too? Click on all the pictures below to learn more.