初中《化学》(第二册)彩色插图中,有一幅“铜树”照片,十分壮观。然而,你可曾想过,怎样制取“铜树”呢?不少同学在实际操作中,制作效果往往不够理想:要么是“铜树”的结构不疏松,要么是上层溶液不能变成无色。我在老师指导下,经过几次实验,摸索到操作简便易行、效果很不错的制 In the color illustrations of Chemistry (second volume) in junior high school, there is a photograph of “copper tree”, which is very spectacular. However, you may have thought about how to make “copper trees”. In practical operation, many students often have poor results: either the structure of the “copper tree” is not loose, or the upper layer solution cannot be changed. color. Under the guidance of my teacher, after several experiments, I found that the operation was simple and the results were very good.