Question

what does having a cooling sensation after squeezing a cold pack indicate about the chemical reaction? the reaction changes in color. the reaction forms a precipitate. the reaction changes in energy.

Explanation:

A cooling sensation indicates an endothermic chemical reaction where energy is absorbed from the surroundings. This shows a change in energy. Color - change and precipitate - formation are not related to the cooling sensation.

Answer:

The reaction changes in energy.