Achieve Week 3 Question 3

[Tanaea Taketa 3H]

Why is the chemical reaction inside an instant cold pack exothermic?

[Brian Nguyen 3B]

An instant cold pack is actually endothermic because it is taking in the heat from its surroundings to feel cold. In order for the cold pack to feel cold, it must lower its temperature compared to its surroundings and since heat is transferred from hot to cold, the cold pack takes its heat from the surroundings, making it an endothermic reaction

[James Lee 3F]

A cold pack reaction is endothermic because in order for the surface of the cold pack to feel cold, there much be a loss of heat from its surface. Logically, the only way that this can happen is if the reaction inside the cold pack is endothermic, which would absorb the heat from its surroundings and thus cause its surface to be cold.

[905802613]

A cold pack is endothermic because it takes in heat to make the pack and the surrounding air cold.