posted by Anonymous .
When a chemical cold pack is activated, a chemical reaction occurs that causes the pack to feel cold.
- Describe the transfer of energy betwen a cold pack and the air around it.
The cold pack gets colder; the air around it gets warmer.
The cold pack gets colder the air around it gets warmer
The reaction is endothermic. Endothermic reactions always feel cold, and heat is being absorbed by the back from the surrounding environment.