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    The Science of Slime!

    The Science of Slime!

    Parents, you know all about slime! You’ve either helped to make it as a science project or your kids played with it. But do you know what makes slime unique? Here is a fun way to explain the science of slime to your kids!

    Is slime a touchy object? It’s squishy, oozy and fun to play with! 

    Slime moves like a liquid, but it can be picked up like a solid. When you pull it slowly it oozes, but pull it to fast, and it breaks apart! It doesn’t have a shape but can take on the shape of the container it is in. 

    There is even a natural version of slime in the form of mucus (snot and boogers). 

    Solid? Liquid? What is Slime?

    Making slime involves chemistry, which is all about states of matter including liquids, solids, and gases.
    Slime is all about polymers, which is made when two or more molecules join together to form a long chain of molecules. Chemical bonds are formed when the glue is mixed with an activator, in this recipe, the saline. Slime activators change the position of the molecules in a process called cross-linking. A chemical reaction happens, and a new substance is formed! 

    Instead of free-flowing, the molecules have now become tangled and create what we call slime. 

    Slime is neither a solid nor a liquid. Instead, scientists call this substance a non-Newtonian fluid. Which means if you let slime ooze through your fingers, it flows like a thick liquid. When you squeeze a non-Newtonian fluid, it feels hard, like a wet solid. This is because squeezing the particles in the slime makes it hard for them to slide against each other.  

    Make your own slime!

    1. Gather your ingredients.

    Mixing Bowl and spatula, 1 bottle of white flue (4 fl oz.), 1 tbsp baking soda, 1 tbsp contact lens solution (saline), food coloring (optional). 

    2. Mix the ingredients together.

    Empty about half the glue into the bowl, mix the baking soda in with the glue. Once the baking soda and glue are blended into a paste, add the food coloring. Add a little saline and stir, until the mixture becomes spongy and less sticky. Add additional saline as needed. Once it no longer sticks, you can touch it, and play! 

    3. Takeaway Project.

    Try manipulating the recipe and see what different consistencies can be made! Even adjust the food coloring, what are the different colors that you can make? 

    Know Yourself. It makes you better at everything.

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