真实情境下问题解决的初中化学教学实践——常见的碱

Junior High School Chemistry Teaching Practice of Problem Solving in Real Situations:Common Alkalis

以压缩氧自救器吸收剂为情境,设计“验证吸收剂成分氢氧化钙”“探究吸收剂能否为氢氧化钠”“碱有哪些共同的化学性质”等3个核心问题,引导学生探究发现常见的碱的性质及其用途,树立“结构决定性质、性质决定用途”的化学观念,感悟化学在生活、生产、环境、社会等各方面的重要作用,提升学生的化学学科核心素养。

Using the compressed oxygen self rescuer absorbent as a scenario,this paper designed three core questions:"Verify the absorbent composition:calcium hydroxide""Explore whether the absorbent can be sodium hydroxide",and"What are the common chemical properties of alkalis?"guided students to discover the properties and uses of common bases,and establish a chemical concept of"structure determines property,and property determines use",and understanded the important role of chemistry in life,production,environment,society and other aspects,improved students'core literacy of chemistry.