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Chapter 19 Vocab

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