Age Range: 5–12 years
Difficulty: Medium
Description:
Make a simple lava lamp with oil, water, food coloring, and effervescent tablets.
Materials Needed:
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Clear plastic bottle
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Vegetable oil
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Water
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Food coloring
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Alka-Seltzer tablets
Instructions:
1. Fill the bottle with vegetable oil, leaving some space at the top.
2. Add water, and then a few drops of food coloring.
3. Drop in an Alka-Seltzer tablet and watch the lava lamp come to life!
Educational Angle:
This teaches concepts of density, liquids, and chemical reactions.