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高中化学是一门学习起来较为困难的课程,化学方程式以及化学理论知识的抽象性,使其很难让学生轻松掌握,通过阐述、归纳几种解答方法,帮助学生提高化学成绩。一、解题中的筛选法主要针对选择题,此方法简单来讲就是将不符合标准的答案排除掉,最终把正确的答案选出来。主要运用在化学课程所学到的概念性知识。例1.如果将某几种气体混合放入集气瓶内,会出现
High school chemistry is a difficult course to learn, chemical equations and the abstraction of chemical theory knowledge, making it difficult for students to easily grasp, by elaborating, summarizing several solutions to help students improve their chemistry. First, the problem-solving screening method mainly for multiple-choice questions, this method is simply to exclude non-standard answers, and ultimately the correct answer selected. Mainly used in chemical courses learned by the concept of knowledge. Example 1. Appears if several gases are mixed in a gas collection bottle