化学是一门以实验为基础的自然学科,科学的实验方法和良好的实验技能不但是中学化学学习的关键,也是高考考核的热点、重点。分析近几年的高考试题,实验题占20%,且比重有所提高。另一方面,从学生的答题情况来看,化学实验题又是学生最易失分,最没有把握的题型,所以很多学生看到实 Chemistry is a natural science based on experiments. Scientific experiment methods and good experimental skills are not only the key to high school chemistry learning, but also the hot spots and key points of college entrance examination. Analysis of college entrance examination papers in recent years, experimental questions accounted for 20%, and the proportion has increased. On the other hand, from the students’ questions, the chemistry experiment is the most vulnerable part of the students, the most unsure questions, so many students see the real