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学习目标:1.认识物质的微粒性,能够用微粒的观点解释某些常见的现象。2.了解物质性质与微粒之间的关系。3.能够设计或完成某些说明物质微粒性的简单实验。4.使学生善于用已有的知识对周围的一些现象作出合理的解释。教学重难点:1.能够用微粒的观点解释某些常见的现象。2.物质的微粒性与物质变化的联系。教学设计:引入:我们学习一些氧气、二氧化碳、水等物质各自都有着不同的性质。哪么物质间为什么发生那么多的反应?物
Learning Objectives: 1. Knowing the granularity of matter, it is possible to explain some common phenomena from the point of view of particles. 2. Understand the nature of matter and the relationship between particles. 3. Be able to design or complete some simple experiments that describe the particulate nature of the material. 4. Make students good at using the existing knowledge of some of the phenomena around to make a reasonable explanation. Teaching difficulties: 1. Can explain some common phenomena from the point of view of particles. 2. The relationship between material particle and material changes. Instructional Design: Introduction: We learn some of the different properties of oxygen, carbon dioxide, water and other substances. Why do so many reactions occur between substances?