Posted on November 25, 2015
If you have vegetable oil, water, food coloring, and a few Alka-Seltzer tablets lying around, and time to sit and gaze at a small and wondrous world, this one’s for you. A good activity for Buy Nothing Day!
You will need (in this order):
-a jar or bottle
Pour some water in the bottom of the jar, forming a layer 1 to 2 inches deep. Add food coloring. Next add oil, making a layer 3 to 4 inches deep that will rest on top of the water (density at work!). When everything has settled, break an Alka-Seltzer tablet into pieces and add, one at a time, to the mix.
You can store this mixture with the top on and reactivate it any time by adding more Alka-Selter tablets. What makes it work? Here are some hints: intermolecular polarity, density, and gas.
Mindport is closed Thursday and Friday, but will re-open Saturday, November 28th at 10 am. Please join us for Correspondence Club if you’d like (10:30 – 12:30). As always, we love to see you.