一、化学科学知识水平1.对化学基本概念和原理、元素化合物这两大知识内容,按照学生的认知水平以及在初中化学中的重要性,教学要求分为常识性介绍、了解、理解、掌握四个不同层次;2.对化学基本计算教学要求的层次是掌握,要求学生熟练掌握有关化学式、化学方程式、溶液等方面 First, the level of chemical scientific knowledge 1. The two major knowledge of chemical basic concepts and principles, elemental compounds, in accordance with the level of students’ cognition and the importance of junior high school chemistry, teaching requirements are divided into common sense introduction, understanding, understanding, Grasping four different levels; 2. Grasping the level of teaching requirements for basic chemistry calculations, requiring students to master proficiency in chemical formulas, chemical equations, solutions, etc.