Difference between revisions of "Metal"
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| − | '''Metals''' are shiny, [[solid]], and [[conductive]] substances, such as [[iron]]. They contrast with the [[nonmetal]]s. They are generally found on the left side of the [[periodic table of the elements|periodic table]]. Most [[elements]] are metals. Some metals are very strong and light, like [[titanium]]. Others are soft and heavy, like [[lead]]. The [[Alkali Metal|alkali metals]] and [[alkali earth metal]]s have to be stored in oil because they oxidize explosively when they come into contact with water, even water vapor in the air. | + | '''Metals''' are shiny, [[solid]], and [[conductive]] substances, such as [[iron]]. They contrast with the [[nonmetal]]s. They are generally found on the left side of the [[periodic table of the elements|periodic table]]. Most [[elements]] are metals. Some metals are very strong and light, like [[titanium]] and aluminum. Others are soft and heavy, like [[lead]]. The [[Alkali Metal|alkali metals]] and [[alkali earth metal]]s have to be stored in oil because they oxidize explosively when they come into contact with water, even water vapor in the air. |
| − | In [[astronomy]] and [[cosmology]], the term "metals" includes any elements other than [[hydrogen]] or [[helium]]. This is termed [[ | + | In [[astronomy]] and [[cosmology]], the term "metals" includes any elements other than [[hydrogen]] or [[helium]]. This is termed [[metallicity]]. |
[[category:chemistry]] | [[category:chemistry]] | ||
[[Category:Metals]] | [[Category:Metals]] | ||
Revision as of 04:05, January 23, 2010
Metals are shiny, solid, and conductive substances, such as iron. They contrast with the nonmetals. They are generally found on the left side of the periodic table. Most elements are metals. Some metals are very strong and light, like titanium and aluminum. Others are soft and heavy, like lead. The alkali metals and alkali earth metals have to be stored in oil because they oxidize explosively when they come into contact with water, even water vapor in the air.
In astronomy and cosmology, the term "metals" includes any elements other than hydrogen or helium. This is termed metallicity.