test on chapters 7-8 Flashcards
(44 cards)
this shows the arrangement of elements, single and double bonds, and lone pair valence electrons in a molecule
lewis structure
this shows the arrangement of elements, single and double bonds, and lone pair valence electrons in a molecule
lewis structure
when one atom donates both of the electrons to be shared w an atom or ion, this forms a ____ _____ ____
coordinate covalent bond
another name for a single covalent bond is a
sigma bond
what is an ionic compound that has more than one atom that behaves as a single unit called?
polyatomic ion
the ____ ____ model proposes that all the metal atoms in a metallic solid contribute their valence electrons to flow around the metal cations
electron sea
when an atom oses electrons it becomes a
cation
an ionic reaction is always
exothermic
____ form when nonmetals bond w the nonmetal oxygen
oxyanion
an ionic solution that conducts electricity is called an
electrolyte
the 3D geometric arrangement of particles is called a ____ lattice
crystal
the simplest ratio of ions involved in an ionic compound is called a ___ unit
formula
a mixture of elements that has metallic properties is an
alloy
the shorter the bond length, the ____ the bond
stronger
_____ is when more than one valid lewis structure can be written for a molecule or an ion
resonance
electrons that are free to move are called _____ electrons
delocalized
____ electrons occupy a slightly larger orbital in the VESPR model
unpaired
trigonal planar
120
linear
180
octahedral
90
bent
104.5
trigonal pyramidal
107.3
tetrahedral
109.5
when one atom donates both of the electrons to be shared w an atom or ion, this forms a ____ _____ ____
coordinate covalent bond
