高考后期,学生要高度重视一些“核心”化学知识点的再复习,认真梳理这些知识,时时翻阅、时时补充,灵活运用。一、氧化还原涉及氧化剂、还原剂、氧化产物、还原产物的判断,氧化剂氧化性或还原剂还原性相对强弱的判断,氧化还原反应方面的计算。解决此类题需从四个规律入手:强弱规律、价态变化 Later stage of college entrance examination, students should attach great importance to some “core” chemical knowledge points to review, conscientiously comb this knowledge, always read, always replenish, flexible use. First, the redox involves oxidant, reductant, oxidation products, reduction products to determine the oxidant or reducing agent reducing the relative strength of the judge, the redox reaction calculations. To solve such problems need to start with four laws: the law of strength, price changes