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本课题是针对初二学生设计的,经过一学期的化学实验课程,他们对化学实验操作有所了解,学生身边也有利用燃烧等化学反应放热为人类服务的实例,如天然气、汽油、柴油、酒精的燃烧等。但学生对化学反应伴随着能量变化认识还是不足,而更多的是关注化学变化中的新物质。如何高效地、更好地提升学生的科学探究能力、实验动手能力、分析问题能力、解决问题能力、学以致用能力以及综合科学素养的提升是作者执教时深入思考的问题。
This topic is designed for the first two students, after a semester of chemical experiment course, they have some understanding of chemical experiment operation, students also have the use of combustion and other chemical reactions exothermic services to human cases, such as natural gas, gasoline, diesel, Alcohol burning and so on. However, students are still not fully aware of the chemical reactions associated with energy changes, and more are concerned with new substances in chemical changes. How to effectively and better enhance students’ scientific inquiry ability, experimental ability, problem-solving ability, problem-solving ability, ability to apply their abilities and the improvement of comprehensive scientific literacy are the problems that the author should think deeply when teaching.