CM8001 Application Exercises (08-Feb-17)

From personal experience, state whether these processes are endothermic or exothermic. Give a reason for each. A charcoal briquette burns. Water evaporates from your skin. Ice melts. Answer: Exothermic. A charcoal briquette releases heat as it burns. Endothermic. Evaporation requires thermal energy from the surrounding. In this sense, thermal energy from your body helps the water on the skin to evaporate. When water evaporates, it takes away thermal energy from the surface of your skin, and your skin feels cooler. […]