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Chapter 19 Vocab

QuestionAnswer
element that typically is a hard, shiny solid,is malleable,and is a good conductor of heat and electricity. metal
ability of metals and alloys to be rolled or hammered into thin sheets. malleable
ability of metals to be drawn into wires. ductile
occurs because electrons move freely among a metals positively charged ions and explains properties such as ductility and the ability to conduct electricity. metallic bonding
element,such as radium,whose nucleus breaks down and emits particles and energy. radioactive element
elements in groups 3 through 12 of the periodic table;occur in nature as uncombined elements and include the iron trad and coinage metals. transition element
element that usually is a gas or brittle solid at room temperature,is not malleable or ductile, is a poor conductor of heat and electricity,and typically is not shiny. nonmetal
a molecule that consists of two atoms of the same element. diatomic molecule
compound formed when negative ions from an acid combine with positive ions form a base. salt
the process of a solid changing directly to a vapor without forming a liquid. sublimation
element what shares some properties with metals and some with nonmetal. metalloid
different forms of the same element having different molecular structures. allotrope
materials having conductivity properties between that of metals (good conductors) and nonmetals (insulator) and having controllable conductivity parameters. semiconductor
elements having more than 92 protons,all of which are synthetic and unstable. transuranium element
Created by: oscargonzalez
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