Bobbing Raisins
Description: Carbon dioxide bubbles from a soft drink attach themselves to the raisins and spaghetti in the beaker, causing them to rise to the surface. When the gas escapes, the raisins and spaghetti sink.
Source: Institute for Chemical Education, Fun with Chemistry; A Guidebook of K-12 Activities. Vol 1
Year: 1991 Vol: 1 Page: 141
Keywords: Carbon Dioxide, Spaghetti, Raisins
Rating: 
Hazard: Low
- All reagents are non-toxic
Effectiveness: Average
- Results are observable with guidance
- Mild effects are seen by audience
- Demo somewhat connected conceptually to course material
- Good reliability
- Time to effects is low
Difficulty: Low
- Simple procedures
- Simple manipulations for most to perform
Safety Precautions:
- Eye protection required
Class: Intermolecular Forces, Gases, Surface Tension
Division: General
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