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Ch. 19 Vocab. I.D.

Physical Science

QuestionAnswer
Element that typically is a hard, shiny solids, 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 or alloys to be pulled into wires. Ductile
Occurs because electrons move freely among a metal's 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
Element in Group 3 through 12 of the periodic table; occur in nature as uncombined elements and include the iron triad 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 from a base. Salt
The process of a solid changing directly to a vapor without forming a liquid. Sublimation
Element that shares some properties with metals and some with nonmetals. Metalloid
Different forms of the same element having different molecular structure. 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: Noemi716
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