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22 Cards in this Set

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alloy
mix of elements that has metallic properties
anion
NEGATIVEly
charged ion
cation
POSITVEly
charged ion
Covalent bond
chemical bond that results in sharing of valence electrons
delocalized electrons
electrons in a metallic bond that moves freely
electrolyte
ionic compound
electron sea model
all metal atoms in a metallic solid contribute their valence electrons to make a sea of electrons
ENDOthermic reaction
ABSORBS heat
EXOthermic reaction
RELEASES heat
formula unit
simplest ratio of ions rep. in an ionic compound
hybridization
process of re-arranging the valence electrons of an atom to form 4 new identical orbitals.
IONIC bond:
holds OPPOSITEly charged ions together

to from ionic compounds
lattice energy
energy needed to seperate 1 mole of ions in an ionic compound

directly relates to size & charge of ions
lewis structure
uses electron-dot structures to rep. how electrons are arranged in molecules
metallic bond
attraction of a metallic cation (+) for a delocalized electron
molecule
forms when 2+ atoms covalently bond (they share electrons)
polar covalent bond:
chem bond that forms when electrons aren’t shared equally
polyatomic ion
ion made up of atoms that act as 1 unit w. a net charge
resonance
happens when
there is 1+ Lewis Dot structure for a molecule
VSEPR model
Valance Shell Electron Pair Repulsion; based on arrangement that min. repulsion
activated complex
transition state;

unstable atoms that re-form quickly
activation energy
energy req. to make reaction occur