10 Copper is a metal. The structure of copper is described as a lattice of positive ions in a‘se a of electrons'.Which statement/s below about copper is/are correct? D1 Copper conducts heat because the positive ions are free to move.2 Copper conducts heat because the electrons are ...
百度试题 结果1 题目Copper is a kind of(a)stone(b)marble(c)wood(d)metal 相关知识点: 试题来源: 解析 d 反馈 收藏
Frank Holmes
Many non-silicate minerals are economically important and provide metallic resources such as copper, lead, and iron.
Copper is used in many different ways, such as for making wires, engine coils, printed circuits, roofing materials, piping materials, heating materials, jewelry, and cookware. It's also used to make bronze, which is a special kind of metal. ...
A。此题考查演绎推理。因为金属导电,铜是金属,所以铜导电,A 选项 conducts 正确,B 选项 doesn't conduct 意思是不导电,不符合推理;C 选项 conduct 形式错误,主语 copper 是第三人称单数,要用 conducts;D 选项 don't conduct 形式错误且意思不符合推理。反馈...
百度试题 结果1 题目Which is a non-metal element? A. Gold B. Silver C. Oxygen D. Copper 相关知识点: 试题来源: 解析 C。Gold(金)、Silver(银)、Copper(铜)都是金属元素,Oxygen(氧)是非金属元素。反馈 收藏
Copper is a non-ferrous metal with a crustal abundance of 0.01%; the average minimum industrial recoverable grade of copper mines is 0.4%; after the copper ores mined from copper mines are flotation into copper concentrates, the copper grade can reach 24 %; After the copper concentrate is s...
Copper is an example of what type of metal? What is the element symbol for arsenic? Which chemical element has the symbol Po? What is the chemical element symbol of sodium? What are the characteristics of copper? What is the symbol for the element with atomic number 74?
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