Up next in How to Do Fun Tech & Science Projects (52 videos)
School science fair coming up? Don't worry: We've got step-by-step instructions to dozens of science projects in this Howcast video series, including how to build an erupting volcano, how to make glow-in-the-dark art, how to make a weather barometer, how to make disappearing ink, how to make 3-D glasses, and how to make a marshmallow gun.
You Will Need
- An empty plastic soda bottle (with cap)
- Vegetable or mineral oil
- Food coloring
- Effervescent tablet (like Alka-Seltzer)
- Sequins and glitter
- A flashlight
Rinse soda bottle
Empty and thoroughly rinse a large plastic soda bottle.
Pour vegetable or mineral oil into the bottle until it is three-quarters full.
Fill with water
Fill the rest of the bottle with water.
Add food coloring
Add several drops of the food color of your choice.
Break a tablet
Break an effervescent tablet (like Alka-Seltzer) into several small pieces.
Drop one piece
Drop a piece into the bottle. Watch the oil begin to fall to the bottom and then rise in small droplets.
Add the rest of the pieces
Continue adding the tablet pieces until they have all dissolved.
Move the bottle back and forth
Put the cap back on the bottle. Begin slowly moving the bottle back and forth in your hands until the oil droplets begin to form one big glob.
Enjoy the show
Enjoy the show! To really bring out the colors of the blob, illuminate the bottle with a flashlight.