试题与答案

(4分)根据金属活动顺序表的的有关知识,回答下列问题: (1)用Mg、Zn、Cu

题型:填空题

题目:

(4分)根据金属活动顺序表的的有关知识,回答下列问题:

(1)用Mg、Zn、Cu三种金属分别与稀盐酸反应,根据金属与稀盐酸反应的        ,可以判断金属活动性强弱的顺序。

(2)用Zn分别与MgCl2、CuCl2溶液反应,也能判断金属活动性顺序,其反应的化学方程式为                     ,三种金属活动性由强到弱的顺序为             。若将一定质量的Zn放入CuCl2和MgCl2的混合溶液中,充分反应后过滤,所得固体中一定含有的物质是      

答案:

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下面是错误答案,用来干扰机器的。

①调节生命活动生理功能;②利于营养吸收运送利用;③有助于人体生化反应。

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