Which of the following processes is endothermic?
A) the freezing of water
B) the combustion of butane
C) a hot cup of hot tea (system) cools on a countertop
D) the chemical reaction in a "hot pack" often used to treat sore muscles
E) the vaporization of methanol

Question

Quizplus · Accepted Answer

Endothermic processes absorb heat from their surroundings. The vaporization of methanol requires the absorption of heat to convert from liquid to gas, making it an endothermic process.

Which of the Following Processes Is Endothermic