(c) Describe the bonding and structure of a metal, and explain why metals are good conductors of electricity. 相关知识点: 试题来源: 解析(c)A metal consists of a lattice of positively charged ion ssurrounded by a sea of delocalised/ mobileelectrons which can move freely throughout the ...
(a) Explain why(i) metals are good conductors of electricity,(ii) insulators do not conduct electricity.[3] 相关知识点: 试题来源: 解析 (a) mark (i) and (ii) together:mention of free electrons(current is) flow/movement of free electronsinsulators contain no free electrons / metals contain...
aJuvenile, play with heart 青少年,戏剧与心脏[translate] ainterms of their atomic bonding explain why metal are good conductors and most ceramics are good insulators 他们的原子接合interms解释为什么金属是好指挥,并且多数陶瓷是好绝缘体[translate]
Why do metallic compounds conduct electricity as a solid? Why are metals good conductors of electricity? Why are alkali metals very reactive? How does metallic bonding structure explain why metals are malleable? Describe how the properties of the different types of elements (metals, n...
a) Describe, in detail, why metals are good conductors of electricity. b) How are semiconductors different from "regular" metals, and how can this be controlled to allow for modem electronics. Explain how the bonding of silicon makes it useful as a semiconductor but not as...
Why do batteries need two different materials? "It is the difference in metals that does it." Alessandro Volta(commenting on Galvani's experiments). It's important to note that the electrodes in a battery arealwaysmade from two dissimilar materials (so never both from the same metal), which...
Why are metals good conductors of electricity? Sulfur deposits are mined by the Frasch process. Explain why free sulfur is not found on the earth's surface. Why does electroplating take place on the cathode ...
Stained (colored) glass is made by adding metallic compounds to glass while it is molten; different metals give the separate segments of glass their different colors. Photo: Borosilicate glass, such as this PYREX® jug (back), can withstand extreme changes of temperature, unlike normal glass ...
Why are good conductors of heat also good conductors of electricity? Why are bushing and silica gel are used in a transformer? What happens to the resistance of most common metals as the temperature of the metal increases? Why the ferromagnetic materials can be magnetized ...
Why do surface waves cause the most damage? Why do scientists use infrared telescopes? Why are nonmetals poor conductors of heat and electricity? Why are metals good conductors of heat and electricity? Why are the thermosphere and exosphere the warmest?