Most people know that a diaper polymer can hold quite a bit of liquid, but you might be surprised to see how much. So while adding water to a diaper polymer and watching it solidify is fascinating.
 
Magic trick: 
	
Put a scoop of those tiny crystals nontoxic polymer into a small clear cup.
	
Fill the cup with about 4 ounces of water. Watch the polymer absorb the water and turn in to thicken clear gel.
	
Observe the gel that the polymer and water create. Then, turn the cup upside down and see how it has solidified. Now you know the super, moisture-absorbing secret hiding in the lining of a baby diaper.
 
Make ice pack: Packing some of this stuff into an airtight bag and freezing it overnight to make an improvised ice pack that won't leak. 
 
Extract water from superabsorbent polymer: Add a teaspoon of salt or acid, stir it with a spoon, and watch what happens. Salt messes up the gel's water-holding abilities.
 
You can create a science fair project by identifying a variable or something to change in this experiment.
 
You can use food coloring (Not including) to change the color of the gels.