Metals are good conductors of heat and electricity because they contain a glut of free electrons. These free electrons are able to move around freely and collide with one another, propagating heat and electricit
(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...
All Siltech Silver-Gold alloys (an alloy means a mix of two or more metals) do have positive aging. In other words, electrically, the wires improve over time, even when not playing music. Moreover, distortion reduces over the years, continuously improving sound quality. These special propertie...
Why are metals good conductors of electric current? a. They possess high concentrations of protons. b. They possess low concentrations of protons. c. They possess high concentrations of free electrons Explain why nuclei that contain more than 82 protons are radioactive. ...
When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. What is the reason for this? A) copper expands more than iron. B) iron expands more than copper. Why are metals good conductors of e...
材料科学与工程基础作业讲评-7 第十次作业中文 4-12热处理（退火）的实质是什么？它对材料的拉伸强度、硬度、尺寸稳定性、冲击强度和断裂伸长率有什么影响？结构弛豫，非晶至结晶转变 4-20玻璃的理论强度超过7000MPa。一块平板玻璃在60MPa弯曲张力下破坏。我们假定裂纹尖端为氧离子尺寸（即裂纹尖端...
Explain why it is more difficult to produce drinking water from wastewater than from water in lakes. Why are metals good conductors of electricity? Sulfur deposits are mined by the Frasch process. Explain why f...
Why are metals extremely good conductors of electricity?Because metals have large numbers of nonlocalized electrons.
and other stuff. It is also used in everyday objects. Titanium is the strongest metal known to man. It can only be found 50mi under ground but it can be made from 3 different metals Iron, silver, Nickel. They have tested its heat resistance. they have also tested how far under a ...
Why metals react more vigorously in acids than in water? Explain why ionic solids do not conduct electricity in the solid state but are strong conductors in the liquid state and when dissolved in water. Why do some electrochemical cells employ inert electrodes such as platinum?