Thermochemistry- Chemical Cold Pack

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