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高考中常出现的函数图象题是从化学量的函数关系的图象角度考查学生对部分重点、难点问题的理解和应用能力。图象题与其它题型一样有其自身的解题规律,解图象题不仅要准确弄清题目中所涉及到的有关化学知识,更要认真分析图象特征。一般来说解图象题的大致方法如下:(1)认准横坐标,纵坐标各表示什么量。(2)看清曲线的起点位置和变化趋势。(3)准确把握各特殊点(包括原点、转折点、终点、最高点、最低点)的含义。(4)认准关键数据、隐含的化学相关知识在解题中的特定作用。为了更好地帮助学生掌握图象题的解题方法,下面对几类常见的化学反应速率,化学平衡图象进行分
The function image question often appearing in the college entrance examination is to examine the student’s understanding and application ability of some key and difficult problems from the perspective of the image of the function of the chemical quantity. The image question has its own law of solving the same problem as other question types. To solve the image question, it is necessary not only to accurately find out the relevant chemical knowledge involved in the question, but also to carefully analyze the image characteristics. In general, the approximate method for solving image problems is as follows: (1) Look for the abscissa and what the ordinates represent. (2) See the starting position and changing trend of the curve. (3) Accurately grasp the meaning of each special point (including origin, turning point, end point, highest point, and lowest point). (4) Look for specific roles of key data and implied chemical related knowledge in problem solving. In order to better help students master problem solving methods for image problems, the following sections will classify several common chemical reaction rates and chemical equilibrium images.