Science Fun

Gorgeous Gooey Gobstoppers

plate-animation

Materials:

  • Plate
  • Water
  • 10 Gobstoppers

Instructions:

  1. Pour water until plate is covered. Don’t pour so much that the water leaks over.
  2. Place 10 Gobstoppers onto plate in any design you want.
  3. Wait and observe for 2-3 minutes as the outer dye appears to melt into the water. What a masterpiece you have created!

How it Works:

Gobstoppers dissolve very quickly when wet. That’s why our saliva breaks them down quickly. The outer layer, which has the different colored dye, is the first to dissolve. When this happens, the colors spread in the water and make a really cool design.

Extra Experiments:

  1. Try using less Gobstoppers, are the colors able to spread to the edges of the plate?
  2. With your parent’s permission, taste one of the partially dissolved Gobstoppers, does it taste the same or different? Try a different color, do they taste the same or different?
  3. Use vinegar instead of water, does it still have the same results?