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A metal (from Ancient Greek μέταλλον (métallon) 'mine, quarry, metal') is a material that, when polished or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. These properties are all associated with having electrons available at the Fermi level, as opposed to nonmetallic materials which do not.: Chpt 8 & 19 : Chpt…
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metals elements metallic alloys gold alloy iron copper used first also steel form electrical use electrons properties titanium silver found
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Metal | is a | metal that is very resistant to heat and wear | 0.90 | text |
| Metal | is a | metal which passes current in only one direction due to the formation of an insulating oxide later.Metallic ceramicsThere are many ceramic compounds which have metallic electric… | 0.90 | text |
| Metal | is a | metal which passes current in only one direction due to the formation of an insulating oxide later | 0.90 | text |
| Metal | is a | mineral body | 0.90 | text |
| steel alloys are referred to as metals | instance of | materials | 0.80 | text |
| while others | instance of | materials | 0.80 | text |
| such as polymers | instance of | materials | 0.80 | text |
| wood | instance of | materials | 0.80 | text |
| or ceramics are nonmetallic materials.A metal conducts electricity at a temperature of absolute zero | instance of | materials | 0.80 | text |
| which is a consequence of delocalized states at the Fermi energy | instance of | materials | 0.80 | text |
| titanium nitride or degenerate semiconductors in the semiconductor industry.The history of refined metals is thought to begin with the use of copper about 11 | instance of | There is also extensive use of multi-element metals | 0.80 | text |
| 000 years ago | instance of | There is also extensive use of multi-element metals | 0.80 | text |
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