化学反应中往往有能量变化,化学能可以转化为热能、电能、生物质能、光能等。本文重点例谈化学反应、化学能与热效应关系,以帮助广大同学认清本质,拓宽视野,增强高考相关题的实战能力。 Chemical reactions often involve changes in energy. Chemical energy can be converted into heat, electricity, biomass, and light energy. This article focuses on the relationship between chemical reactions, chemical energy and thermal effects, to help students understand the essence, broaden their horizons, and enhance the actual ability of college entrance examination related topics.