【摘要】 化学计算一直是各种考试的热点,因其涉及到的化学基本概念多,解法灵活多变,所以是中学化学教与学的重点、难点。文章主要从历年高考的试题中选取部分例题重点例析“十字交叉法”在化学计算中的应用。更多还原

【Abstract】 Chemistry calculating is always the focus in exams, it concludes many basic concepts and has many flexible methods. So it is main and difficult point in senior school chemistry teaching. There are many methods for chemistry calculating, in the paper the writer talks about the application of crossing method in chemistry calculating by analyxing the selected examples from the past examinations for universities and colleges.更多还原