Chemical Cold Pack
Description: First-aid cold packs, containing ammonium nitrate and water in separate inner pouches, demonstrate an endothermic solution process. These can be passed around to students.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1983 Vol: 1 Page: 8
Keywords: Cold Pack, Endothermic, Ammonium Nitrate, Solution
Ratings: 
Hazard: Low
- Sealed contents
Effectiveness: Average
- No direct observations are made
- Good connection from demo to course material
- No effects are seen by audience
- Time to results is low
- High reliability
Difficulty: Low
- Simple procedures
- Simple manipulations for most to perform
- Experiments in which samples are passed out
Safety Precautions:
- Eye protection required
- Absorbent material on hand
Class: Thermochemistry
Division: General
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