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第七章 质量和密度 这一章的教学要求是:知道质量的单位;会使用天平称质量(会调节天平的平衡螺母,会使用游码);掌握密度的概念;会查密度表;知道水的密度;会用量简测体积;会用天平和量简测固体和液体的密度。 本章的教学重点是密度的概念,不仅要求学生理解什么是密度、密度的单位、计算公式,而且要能灵活地运用这些知识解决简单的问题。
Chapter VII Quality and Density The teaching requirements of this chapter are: Know the quality of the unit; Will use the balance to weigh the quality (will adjust balance balance nut, will use the code); Grasp the concept of density; Check the density table; Know the water The density; will use a simple volume; will use the balance and the amount of simple measurement of solid and liquid density. The teaching of this chapter focuses on the concept of density. It not only requires students to understand what is the density, density unit, and calculation formula, but also has the flexibility to use this knowledge to solve simple problems.