Skittles Rainbow

Several people have contacted me to say they would like to do the Density Rainbow at a party or a class presentation, but they can't make all the Skittles dissolve in time. The easiest fix for this problem is to microwave each solution for about 30 seconds and give it a stir; this should dissolve the rest of the candy. If you don't have access to a microwave, try this:

1. Fill five glasses with 3 TBSP water each. Use warm water if you can.
2. Add your Skittles to the water, each color in a different cup. Use
  • 20 purple Skittles
  • 15 green Skittles
  • 10 yellow Skittles
  • 5 orange Skittles
  • 1 red Skittle
3. As soon as the shell on the red Skittle dissolves, take the Skittle out of the colored water.
4. Check your other solutions to make sure the candy has dissolved. (The ones with the most Skittles will take the longest to dissolve.) If it's time to do the rainbow and one of your solutions isn't ready, start with the next color of the rainbow.
5. Pour your rainbow with the purple on the bottom and the red on the top.

If you need a backup:
The Density Rainbow is tricky, and can be ruined if you pour too fast or if somebody jostles your elbow. In case this happens, prepare a second set of solutions. Since you'll have lots of reds and oranges left over, but not a lot of purple, use the Skittles in reverse order (20 red/15 orange/10 yellow/5 green/1 purple). Pour your rainbow as above.

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