计算题是化学中考的重要题型。一般在试卷最后,设置一道独立计算题作压轴题。以化学方程式计算为主线,可能通过反应前后质量差提供数据(如2011年),也可能利用某物质纯度呈现数据(如2012年),还可能通过直角坐标系图像提供数据(如2014年),甚至直接给出某纯净物质量(如2015年);然后建立比例式、再行求解。尽管分值只占10%左右,但是失分较为严重。个人认为,计算题的审题是解题的关键。审题 Computation questions are important questions in chemistry. Usually in the final papers, set up an independent calculation of the subject as a finale. Calculations based on chemical equations may provide data from poor quality before and after the reaction (eg 2011), data from some material purity (eg 2012), data from Cartesian images (eg 2014), Even directly given the quality of a pure substance (such as 2015); and then set up the ratio, and then solve. Although the score only accounts for about 10%, but the loss is more serious. Personally think that the calculation of exam questions is the key to solving problems. Moderation questions