A. good conductors of electricity B. poor conductors of heat C. shiny and hard D. liquids at room temperature 相关知识点: 试题来源: 解析 B。非金属在元素周期表中通常是热的不良导体。选项 A 是金属的特点;选项 C 通常是金属的特点;选项 D,非金属在室温下不一定是液体。反馈...
Chemical properties of non-metals 1) Nonmetals are poor conductors of heat and electricity. Graphite and Gas carbon are exceptions. 2) Unlike metals, nonmetals aren’t malleable and ductile. 3) Nonmetals react more with metals than with nonmetals.Tutorialspoint...
Why are nonmetals poor conductors of heat and electricity? Why are nonmetals good insulators? Why are metals good conductors of heat and electricity? Why is a good conductor of electricity also a good conductor of heat? How do insulators help conductors?
Materials that are poor conductors of electricity are calledinsulators. Some examples are wood, glass, plastics, non-metal elements that are polymers of hydrocarbons. ... So among the following options aluminum, silver and copper are metals and these are good conductors of electricity. ...
I say pure metal because alloys are relatively poor conductors of heat and electricity. This is because alloys are formed by introducing foreign atoms into a metal. This leads to an increase in irregularities, which then obstruct the motion of a free electron. As the free electrons are unable...
Which of these materials are usually poor conductors of heat and electricity? a. metals b. metalloids c. nonmetals d. alkaline earth metals Periodic Trends: The periodic table can be used as a useful tool to classify and organize ...
(a) Iodine is a lustrous non-metal. (b) Bromine is a non-metal which exists as a liquid at room temperature. (c) Graphite is the allotropic form of carbon and it is a good conductor of electricity. (d) Carbon is a non-metal which is known to form t
Conductivity is the ability of conductors to "conduct" electricity. Such materials offer less opposition or “resistance” to the flow of charges. Which is the bad conductor? Non-metals are generally bad conductors or insulators. ... The poor conductor has very few numbers of a free electron...
Metals conduct electricity . So, if the substance is metallic the bulb will light up when the switch is on. Non-metals are poor conductors. The bulb will not light up when the switch is on. Next: NCERT Question 6 Important→ Go Ad-free Class 10 Chapter 3 Class 10 - Metals and ...
1 Metals in general are good conductors,___WHILE__ nonmetals are insulators.WHILE ---用于对比时。解释为“而- - - - ”。 2 Graphite conducts electricity and does not burn. ---and 解释为“并且- - -...结果一 题目 Metals in general are good conductors,___ nonmetals are insulators.A...