It is reddish orange with a bright metallic luster when it's new, but that's just the copper plating. 当它是新的时候,它是红橙色的,有一个明亮的金属光泽,但这只是电镀铜。 The penny's not solid copper. 一分钱不是固体铜。 In actuality, it is almost 98 percent zinc. 实际上,它几乎是98...
If your trombone was made of pure copper or pure zinc, it wouldn't sound nearly as beautiful as a brass trombone. Another alloy, a combination of copper and nickel, resists corrosion. It does not rust, even with prolonged exposure to water. ...
As Tammy implied, the penny looks like it's solid copper.It's reddish orange, with a bright metallic luster when it's new; but that's just the copper plating.The penny's not solid copper;in actuality, it's almost 98 percent zinc. ...
It is reddish orange with a bright metallic luster when it's new, but that's just the copper plating. 当它是新的时候,它是红橙色的,有一个明亮的金属光泽,但这只是电镀铜。 The penny's not solid copper. 一分钱不是固体铜。 In actuality, it is almost 98 percent zinc. 实际上,它几乎是98%...
Well, brass is an alloy of copper and zinc. If your trombone was made of pure copper or pure zinc, it wouldn't sound nearly as beautiful as a brass trombone. Another alloy, a combination of copper and nickel, resists corrosion. It does not rust, even with prolonged exposure to water....
Well, brass is an alloy of copper and zinc.If your trombone was made of pure copper or pure zinc, it wouldn't sound nearly as beautiful as a brass trombone. Another alloy, a combination of copper and nickel, resists corrosion…it doesn't rust, even with prolonged exposure to water. ...
It is reddish orange with a bright metallic luster when it's new, but that's just the copper plating. 当它是新的时候,它是红橙色的,有一个明亮的金属光泽,但这只是电镀铜。 The penny's not solid copper. 一分钱不是固体铜。 In actuality, it is almost 98 percent zinc. ...