Chemical Hot Pack
Description: First-Aid Hot packs, containing either calcium chloride or magnesium sulfate, plus water, demonstrate a spontaneous exothermic 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 36
Keywords: Hot pack, Exothermic, Sodium thiosulfate, Calcium chloride
Rating: 
Hazard: Low
- Sealed contents
Effectiveness: Average
- Average connection from demo to course material
- Time to results is low
- Good reliability
- No direct observation
- Mild effects are seen by audience
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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