化学,是令很多同学头痛的一门学科,每次考试,成绩都不理想。现在高考的步伐越来越近,这部分同学十分着急,却又苦于找不到行之有效的办法。那么这部分基础差的同学,到底如何能在短期内提高分数呢?依靠记背,效果不理想,依靠做题,对知识点又是懵的,结合起来复习吧,又不知道从哪里开始。其实学好化学并不是很难,只要注意以下四点,就能快速提高成绩。1.从元素周期表角度考虑一切化学反应。化学反应的问题都是最外电子层是否“饱和”的问题,物态的化合价基本符合元素周期表 Chemistry is a subject that causes many students a headache. Every examination fails with satisfactory results. Now the pace of college entrance examination getting closer, this part of the students are very worried, but hard to find an effective way. So in this part of the basis of poor students, in the end how to improve scores in the short term? Rely on the back, the effect is not satisfactory, relying on questions, knowledge of the point is again, and review it together, do not know where to start. In fact, learning chemistry is not difficult, just pay attention to the following four points, you can quickly improve their grades. 1. Consider all chemical reactions from the elemental periodic table perspective. Chemical reactions are the outermost electronic layer whether the problem of “saturation”, the state of the valence basically in line with the periodic table