Extreme Science: Slime Filled Easter Eggs - Spokane, North Idaho News & Weather KHQ.com

Extreme Science: Slime Filled Easter Eggs

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Slime Filled Easter Eggs

What you will need:

  • Plastic Easter eggs
  • Clear Elmer’s ™ glue
  • White Elmer’s ™ glue
  • 20 Mule Team Borax ™
  • Liquid Starch
  • Yellow (washable) paint
  • Small containers or Ziplock ® baggies
  • Popsicle sticks
  • Water
  • Adult supervision

Procedure:

Clear (gooey) “Egg White” Slime

1) Mix two parts water to one part clear Elmer’s glue.

2) Place approximately ½ cup of this mixture into your baggie or mixing container.

3) Add a small squirt of liquid starch (approximately 1-2 tablespoons) and mix until the molecules have bonded together making a slimy substance.

4) Set aside.

Yellow “Egg Yolk” putty

1) Pour approximately ½ cup white Elmer’s glue into a baggie or your mixing container.

2) Add a small squirt of yellow paint to your glue until it is the desired shade of yellow.

3) In a separate container or small glass of water add a couple of tablespoons of Borax powder and stir it to dissolve as much as possible. You have now made a sodium Borate Solution.

4) Add about a tablespoon or two of this sodium borate solution to your glue/paint mixture. Mix until all of the molecules are connected into chains. You will know that this has happened when all of the liquid is gone and all you have is a putty-like substance.

Making your slime filled Easter Egg

1) Take a small amount of your yellow “Egg Yolk” putty and roll it in your hands making a small round ball of putty about the size of an egg yolk. Set aside.

2) Open up your plastic Easter eggs and fill one half with your clear “Egg White” slime.

3) Partially fill your other half of the plastic Easter Egg with your clear “Egg White” slime making sure to leave just enough room for the “Egg Yolk”

4) Place your small yellow “Egg Yolk” putty ball into the clear slime in your plastic egg.

5) Make sure to close the eggs tightly.

Special notes:

1) I noticed that some of the newer plastic Easter Eggs have small holes in them to ease in opening them. If your eggs have these holes, you will want to make sure and seal them prior to filling your eggs with slime. I found that a hot melt glue gun worked well.

2) If you plan to transport your slime filled eggs, remember to put them into a ziplock baggie just in case they decide to open up and dump slime everywhere.

What is going on?

You are actually making what we call a polymer. A polymer is a long chain of molecules and if you pull it slowly, it will stretch. If you pull it too fast, it will break. When you mix sodium borate with Elmer’s ® glue, the sodium borate will act as the cross linker to link all of the molecules together into these chains. Liquid starch also contains a borate molecule but since it contains a glucose ion as well, it will make increase the tensile strength and make your polymer stretch even farther. By mixing 2 parts water with one part glue, this also helps make your slime extremely stretchy – and sticky!

Here at Extreme Science, we tried making our slime using PVA (Polyvinylalcohol) and liquid starch but found that the liquid starch will cause about 50% of them to turn back to a liquid within a day or so. Since we want every one of our little scientist to be satisfied, we continue to make our slime with PVA and sodium borate. Although PVA makes a much better slime than Elmer’s ® glue, it is not available in to the general public. They actually use PVA to make Elmer’s ® glue. I also suggest using a washable paint rather than food coloring as many recipes will call for. Food coloring will stain, whereas a good washable paint is exactly that – washable! Remember, you can always schedule an Extreme Science birthday party and we will bring our slime kit for you and all of your friends to make some AWESOME Extreme Science Slime at the end of your party.

Try this:

Try mixing your glue and water in various proportions to see if you can get a slime that is nice and stretchy but maybe not quite as sticky.

Radical Rick
Extreme Science
www.ExtremeScienceFun.com

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