![]() When you add the borate ions to the mixture, it starts to connect these long strands together. These molecules with flow past one another keeping the glue in a liquid state. The glue is a polymer and is made up of long, repeating, and identical strands or molecules. 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. 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! We have a brand new series out on NGSS science standards, so you can read how this will fit in nicely too! This cornstarch-water mixture behaves similarly to quicksand.We always like to include a bit of homemade slime science around here, and that’s perfect for STEM which is science, technology, engineering, art, and math. But when you try to move your hand through it quickly or forcefully hit the substance, it behaves like a solid. Whenever you gently and slowly move your hand through the cornstarch-water mixture, it behaves like a liquid.Did the substance splatter everywhere or did it remain in the bowl? (If it splattered, add more cornstarch.) ![]() ![]() (Be careful not to hurt yourself on the bowl!) Make sure to hit the substance hard and pull your fist back quickly.
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