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Question:

A thin aluminum wire similar to a thin wire

A thin aluminum wire similar to a thin wire

Answer:

The two metal rods were placed in dilute sulfuric acid mass fraction and mass are the same, fast response is aluminum rod, the slower is aluminum and iron bars. According to dilute sulfuric acid fast reaction rate, can be the difference between aluminum and iron
The magnet can attract the wire, and can not attract aluminum wire, with a magnet near two metal rods, attracted by magnets are iron bars, can not be attracted by the magnet is aluminum rod; according to the iron can be attracted by a magnet, can distinguish between iron and aluminum.
The hardness of iron is larger than that of aluminum. It is marked by two metal bars. The mark is obviously iron bar. The mark is not obvious. The material can be distinguished according to the hardness of the material
It shows by wire, aluminum wire and the volume of the same, but the iron density than aluminium, can be used for quality balance of two metal rods, the quality is good, the quality of the aluminum bar is small; can be distinguished according to different material density.

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