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Ch. 19 voc
allotrope, ductile, malleable
14
Chemistry
11th Grade
01/16/2014

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Term
allotrope
Definition
froms of the same element having different moleculars structures
Term
diatomic molecule
Definition
a molecule that consits of two atoms of the same element
Term
ductile
Definition
ability of metals to be drawn into wires
Term
malleable
Definition
ability of metals and alloys to be rolled or hammered into thin sheets
Term
metal
Definition
element that typically is a hard shiny soild is malleable and is a good conductor of heat and conduct electricity
Term
matallic bonding
Definition
occurs because electrons move freely among metal's positively charged ions and explains properties such as ductility and ability to conduct elecricity
Term
metalloid
Definition
element that shares some properties with metals and some with nonmetals
Term
nonmetals
Definition
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
Term
radioactive element
Definition
element such as radium whose nucleus breaks down and emits particles and energy.
Term
semiconductor
Definition
materials having conductitiviy properties between that of metals and nonmetals and having controllable condutivity parameters
Term
sublimations
Definition
the process of soild changiging directly to a vapor with out forming a liquid
Term
transition elements
Definition
elements in group 3 through 12 of the periodic table occur in nature as uncombined elements and include the iron triad and coinage metals
Term
tranuranium element
Definition
elements having more than 12 protons all of which are synthetic and unstable
Term
salt
Definition
compound formed when negative ions form an acid combined with positive ions from a base
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