在化学反应中,反应物之间的接触面积越大反应越容易进行。在解题时,通过分析、比较反应物的状态、用量、接触面积等因素来判断反应的难易、速度、现象剧烈程度及解释相关现象,达到快速准确解题的目的,在化学中表现在以下几个方面。 In chemical reactions, the larger the contact area between reactants, the easier the reaction. In the process of solving problems, we can judge the reaction difficulty, speed, the degree of the phenomenon and explain the related phenomena through the analysis and comparison of reactants status, dosage, contact area and other factors to achieve the purpose of rapid and accurate problem solving, The following aspects.