A. Graphite B. Silicon C. Phosphorus D. Sulfur 相关知识点: 试题来源: 解析 A。题目中描述的元素是非金属且是良好的电导体。硅是半导体不是良好导体。磷和硫都是非金属但不是电导体。而石墨是非金属且是良好的电导体。反馈 收藏
题目Which substance is a good conductor of electricity? A. Glass B. Wood C. Metal D. Plastic 相关知识点: 试题来源: 解析 C。本题考查物质的导电性。Glass(玻璃)、Wood(木头)、Plastic(塑料)都是绝缘体,不导电;Metal(金属)是良好的导体。
“Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons). For a material to be a good conductor, the electricity passed through it must be able to move the electrons; the more free electrons in a metal, the greater its conductivity....
Carbon in the form of graphite is the only non-metallic element that conducts electricity.As we all know, graphite is composed of sheets of hexagons of carbon atoms joined by covalent bonds. Between each sheet, there are weaker (pi) bonds along which the electrons are free to move. It ...
process for assembling a metal conductor of electricity with an element is a substance is obtained by this process and assembly of refractoryTITUS,LESLIE
Copper — Most of us know that copper is an excellent conductor of electricity. Thus, copper electroplating is a preferred metal finishing choice in the manufacturing of electronic circuit boards, semiconductors, and other electronic parts and components. In addition to being highly conductive, copper...
Define metal base. metal base synonyms, metal base pronunciation, metal base translation, English dictionary definition of metal base. the bottom support; that on which something stands; a fundamental principle; basis; foundation: Place the vase on the b
conductor- a substance that readily conducts e.g. electricity and heat sterling silver- a silver alloy with no more than 7.5% copper 2.silver- coins made of silver precious metal- any of the less common and valuable metals often used to make coins or jewelry ...
Copper is a chemical element, a reddish, extremely ductile (able to be drawn out into a thin wire) metal. It is an excellent conductor of electricity and heat. Where does copper come from? Copper is found in the free metallic state in nature. First used in 8000 BCE, it was a substitu...
A three-phase metal-clad electricity line insulated by gas under pressure, the line including a plurality of lengths each constituted by modules that are assembled together end-to-end, each length bei