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| froms of the same element having different moleculars structures |
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| a molecule that consits of two atoms of the same element |
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| ability of metals to be drawn into wires |
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| ability of metals and alloys to be rolled or hammered into thin sheets |
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| element that typically is a hard shiny soild is malleable and is a good conductor of heat and conduct electricity |
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| occurs because electrons move freely among metal's positively charged ions and explains properties such as ductility and ability to conduct elecricity |
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| element that shares some properties with metals and some with nonmetals |
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| element that usually is a gas or brittle solid at room temperature is not melleable or ductil is a poor conductor of heat and ectricity and tpically is not shiny |
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| element such as radium whose nucleus breaks down and emits particles and energy. |
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| materials having conductitiviy properties between that of metals and nonmetals and having controllable condutivity parameters |
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| the process of soild changiging directly to a vapor with out forming a liquid |
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| elements in group 3 through 12 of the periodic table occur in nature as uncombined elements and include the iron triad and coinage metals |
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| elements having more than 12 protons all of which are synthetic and unstable |
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| compound formed when negative ions form an acid combined with positive ions from a base |
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