| chemical element |
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
출처: wordnet.princeton.edu/perl/webwn
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| chemical element |
Any material that is composed of only one type of atom. It is also called a basic element or just an element. (Basic Science/Electricity/elements.htm)
출처: www.ndt-ed.org/GeneralResources/Glossary/letter/c....
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| chemical element |
a heavy bluish gray metallic element that bends easily. Source: galena, cerussite. Use: car batteries, pipes, solder, radiation shields. Symbol Pb
출처: encarta.msn.com/dictionary_1861625368/lead.html
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| chemical element |
A fundamental substance comprising one kind of atom; the simplest form of matter.
출처: www.e11th-hour.org/resources/backgrounders/environ...
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| chemical element |
SEE: element.
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