随着新一轮课程改革的不断深入,考查同学们素质与能力的新题型的数量增多,分值逐年提高．化学是一门以实验为基础的自然科学,化学实验是化学学科形成和发展的基础,化学上的规律、理论都来源于实践(化学实验是一种最重要的实践形式),并在实践中接受检验．因此 With the continuous deepening of the new round of curriculum reform, the number of new questions that examine the quality and ability of the students has increased, and the scores have increased year by year. Chemistry is a natural science based on experiments. Chemistry experiments are the foundation of the formation and development of chemistry disciplines. Chemical laws and theories are all derived from practice (chemical experiments are one of the most important forms of practice), and in practice Accept inspection. therefore