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Chapter 18 Vocab.

Vocab.

TermDefinition
metal element that typically is a hard, shiny solid, is malleable, and is a good conductor of heat and electricity.
metalleable can be hammered or rolled into sheets.
ductile ability of metals to be drawn into wires.
metallic bonding occurs because electrons move freely among a metal's positively charged ions and explains properties such as ductility and the ability to conduct electricity.
radioactive element element, such as radium, whose nucleus breaks down and emits particles and energy.
transition element elements in Group 3 through 12 of the periodic table; occur in nature as uncombined elements and include the iron triad and 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 eat and electricity, and typically is not shiny.
diatomic molecule consists of two atoms of the same element in a covalent bond.
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 and 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) and nonmetals (insulators) and having controllable conductivity parameters.
transuranium element elements having more than 92 protons, all of which are synthetic and unstable.
Created by: ariesgurl
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