论文部分内容阅读
一、条件开放型这类试题是指给定多余的条件或者题目所给条件不完备.解答这类试题,需要从多个条件中选择一个或多个来解决问题,对不完备的条件或比较模糊的条件,应进行知识迁移、发散,并寻求明确条件,最终解决问题.例1人们可以对物质从不同的角度进行分类.请根据示例将醋酸、水、食盐三种物质进行分类,并写出分类依据.不同类的物质分类依据示例食盐常温下食盐是固体,其余是液体分类一分类二分析本题要求对物质从不同的角度进行分类,没有限定的条件,同学们可根据物质的化学性质或物理性质来进行分类.答案:合理答案均可.
First, the conditional open type of such questions refers to the given conditions or questions given incomplete conditions.To answer such questions, you need to select one or more from multiple conditions to solve the problem, the incomplete conditions or comparison Fuzzy conditions, knowledge transfer should be carried out, divergent, and seek clear conditions, and ultimately solve the problem.Example 1 people can be classified from different perspectives.Please classify acetic acid, water, salt according to the example and write According to the classification of different types of substances based on examples of salt common salt at room temperature is solid, the rest is a liquid two-component classification analysis This question requires the classification of substances from different perspectives, there is no limit to the conditions of students according to the chemical nature Or physical properties to classify. Answer: reasonable answer can be.