Description
Create a colorful lava lamp to explore density and chemical reactions using oil, water, and effervescent tablets, sparking curiosity about liquid interactions.
Details
1. Fill a clear bottle 2/3 with vegetable oil.
2. Add water to 1 inch below the top.
3. Add 10 drops of food coloring.
4. Break an effervescent tablet into pieces and drop one in.
5. Watch bubbles rise and fall as the tablet reacts.
6. Discuss why the water and oil don’t mix and how the bubbles form.
Materials
Clear bottle, vegetable oil, water, food coloring, effervescent tablets