1. Begin by filling up your bottle a third of the way with water.
2. Then add a TON of food coloring so the water becomes nice and dark in color.
3. Fill up the remainder of the bottle with vegetable oil.
4. Finally, break your Alka-Seltzer into little pieces (into four parts works well).
How to Play:
Now for the fun!
1. Drop one piece of Alka-Seltzer at a time into the bottle. Do you see all the bubbly action?
2. Wait to drop the next one until the bubbles from the first one have subsided.