一、金属活动性顺序的比较图 1例 1　等质量的三种金属Ａ、Ｂ、Ｃ和相同质量分数的足量稀硫酸反应 ,都生成 +2价金属硫酸盐 ,其反应情况如图 1所示 .依图可知三种金属的活动性顺序是.(2 0 0 1年广东省深圳市中考题 )　解析　从三条线的斜率来看 ,Ａ的斜率最大 ,Ｂ的斜率最小 . First, the comparison of the sequence of metal activity Figure 1 Example 1 Three metals of equal quality, A, B, C and the same mass fraction of sufficient amount of dilute sulfuric acid reaction, all generate +2 valence metal sulfate, and its reaction is shown in Figure 1. According to the figure, the sequence of activity of the three metals can be seen (in the case of the examination in Shenzhen City, Guangdong Province in 2001). From the perspective of the slope of the three lines, the slope of A is the largest, and the slope of B is the smallest.