Combustion of Cellulose Nitrate (Guncotton)
Comparing the Specific Heat of Metals II
Endothermic Reactions of Barium Hydroxide and Ammonium Salts
Explosive Decomposition of Nitrogen Triiodide
Explosive Reaction of Hydrogen and Oxygen
Comparing the Specific Heat of Metals I
Decomposition of Ammonium Dichromate
Evaporation of Ether is Endothermic
Explosions of Lycopodium and Other Powders
Reaction of Calcium Oxide and Water
Reaction of Potassium Permanganate and Glycerine
Spontaneous Combustion of White Phosphorus
Reaction of Metals and Hydrochloric Acid
Combustion of Carbon Disulfide With Nitrous Oxide
Reaction of Aluminum and Mercury (II) Chloride
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
Return to General Chemistry Demonstrations