Here are the ingredients we used:
We used glitter glue, but you can use regular glue instead and add food coloring if you like. I highly recommend doing this activity on an old towel because it is messy and may ruin your towel.
First we added 1/2 cup of water and 4 oz of glue to a bowl and mixed it up.
In another bowl, we added 1 cup of water and 1 teaspoon of borax. We thought it was strange to only add one teaspoon of borax, but it worked pretty well.
Then we poured the glue mixture into the water and borax.
And now I stirred it all together.
It started to get goopy. A good idea that it is working is to lift up your spoon if the goop is dangling down, that is good.
Then I took out the slimy goop. It was soft and squishy.
I started to squeeze it and it got more rubberier.
It ended up very stretchy and I was surprised to find out it was also bouncy.
I like the fact that it is so stretchy and durable. I formed mine into two brains (they looked like broccoli). I had a brain fight. It was fun. Two sparkly green brains/broccoli bouncing off of each other. Good times.
Why did the goop form?
The glue has an ingredient called polyvinyl acetate, which is a liquid polymer. The borax links the polyvinyl acetate molecules to each other, creating one large, flexible polymer. This kind of goop will get stiffer and more like putty the more you play with it.
Here is a link to a website that explains what a polymer is.
