Today, my mother and I went to visit our relatives. I found a bunch of colorful things like iron in their backyard, so I dragged my mother to the backyard and asked her what they were. My mother said they were copper, and I asked, then why do copper have so many colors? Mom replied, "Then check it yourself." .

When I got home, I turned on my computer and typed in "Why does copper have different colors?" What I learned is as follows:

Pure copper is purple. It can conduct electricity and has good heat transfer performance. Apart from silver, copper is the most conductive metal.

Copper can be used to make musical instruments. Especially brass, is widely used in the manufacture of musical instruments. As early as the Han Dynasty in China, there was a process of making brass. Brass is named after yellow, and its color changes with the content of zinc. If the zinc content is 18%-20%, it is red and yellow; 20%-30%, brown; When the zinc content is 42%-50%, it is golden yellow; When the zinc content is 50%-60%, it is yellow and white.

We often see solemn and gloomy bronze statues in front of some tall buildings. They are made of bronze. Bronze is an alloy of copper and tin, sometimes containing zinc.

Through the data, I have a general understanding of copper and learned a lot of knowledge.