设计实验方案证明铁、铜、银三种金属的活动性(药品自己选择,有几种方案写几种)并简述其中一种方案步骤
、现象及结论。(1)___________________________________________________________________________...
、现象及结论。
(1)_______________________________________________________________________________________
(2)_______________________________________________________________________________________
(3)_______________________________________________________________________________________
(4)_______________________________________________________________________________________
(5)_______________________________________________________________________________________ 展开
(1)_______________________________________________________________________________________
(2)_______________________________________________________________________________________
(3)_______________________________________________________________________________________
(4)_______________________________________________________________________________________
(5)_______________________________________________________________________________________ 展开
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