Project

Objective

In this experiment, students will learn about the scientific principles: density and polarity.

---

Project Details

---

Materials

• Vegetable oil
• Clear, empty bottle
• Alka-Seltzer tablet
• Food coloring
• Pitcher of water
• Chopstick or long pencil (for stirring)

---

Research Question: Will the lava lamp erupt?

Experimental Procedure: 

1. Pour the vegetable oil into the bottle, filling it about 2/3 full.
2. Fill the remaining 1/3 of the bottle with water, but leave 1 inch of space from the top.
3. Add 10 or more drops of food coloring to the bottle of water and oil.
4. Stir the mixture with a chopstick or long pencil.
5. Break the Alka-Seltzer into 4 pieces and add a piece one-by-one to the bottle.
6. Watch the lava lamp go!

---