化学是一门以实验为基础的学科,实验是化学教学的重要组成部分,它能为学生正确认识物质及其性质、规律提供生动、直观、形象的感性材料,精心设计演示实验、学生实验,既能优化化学课堂教学,也能激发学生的学习兴趣、培养学生的观察能力、启发学生的实验思维、提高学生的实验技能、培养学生的科学态度。一、运用演示实验优化课堂教学,激发学生学习兴趣“兴趣是最好的老师”。浓厚的学习兴趣,是学生探究知识的强大动力,运用有趣的演示实验创设情境,能迅速抓住学生的心弦, Chemistry is an experiment-based discipline. Experiment is an important part of chemistry teaching. It can provide vivid, intuitive and vivid sensory materials for students to correctly understand the matter and its nature and law, elaborately design demonstration experiments, student experiments, It can not only optimize chemistry classroom teaching, but also stimulate students’ interest in learning, develop students’ observation ability, inspire students’ experimental thinking, improve students’ experimental skills and cultivate students’ scientific attitude. First, the use of demonstration experiments to optimize classroom teaching, stimulate students interest in learning “interest is the best teacher ”. Strong interest in learning is a powerful motivation for students to explore knowledge, the use of interesting demonstration experiment to create situations, students can quickly grasp the heart,