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. […]
Author: Xuanming Sim
In today lesson, 25th January 2017, I have learnt that: Particles of ashes hasten the transformation of sulfur dioxide to sulfur trioxide Water vapor changes from time to time and day to day Nitrogen is the most abundant of exhale air That’s all folkĀ