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Chapter 12
Alkenes, Alkynes, Aromatics
63
Chemistry
Undergraduate 1
08/08/2006

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Term
unsaturated compounds contain places where
Definition
more hydrogen can be added
Term
halogen substituents get treated the same as
Definition
alkyl groups
Term
unsaturated means
Definition
that you can add hydrogen
Term
compounds with double bonds suffix
Definition
-ene
Term
suffix for compounds with triple bonds
Definition
-ynes
Term
alkenes...cis or trans isomers possible
Definition
no
Term
alkenes: noncyclic isomers possible?
Definition
no (no linear isomers possible)
Term
When naming alkenes, name the longest continual chain the contains the
Definition
double bond (functional group)
Term
number the chain so that the double bond has the
Definition
lowest possible number
Term
more than one double bond called
Definition
-diene, -triene, etc
Term
the central carbons in a double bond have a bond angle of
Definition
120 degrees
Term
and the geometry of a double bond is
Definition
triagonal planar
Term
the carbons in the alkene are
Definition
hybridized sp2
Term
the sp2 hybridized carbons form (blank) bonds
Definition
single
Term
what forms the double bond?
Definition
remaining p orbital
Term
sigma bonds are
Definition
single bonds
Term
pi bonds
Definition
second bond of the double bond
Term
is the double bond rigid
Definition
yes
Term
is rotation possible around a double bond?
Definition
no
Term
because double bonds are possible
Definition
cis/trans isomers (stereoisomers)
Term
do all alkenes have stereoisomers?
Definition
no
Term
which hydrogens do you look at when deciding if its cis or trans?
Definition
the hydrogens on the double bond
Term
are alkenes polar
Definition
no (nonpolar)
Term
are alkenes soluble in water?
Definition
no
Term
are alkenes soluble in non-polar solvents?
Definition
yes
Term
molecules with four or less carbons are what state?
Definition
state
Term
molecules with four to seventeen carbons are what state
Definition
liquid
Term
more than 17 carbons what state?
Definition
solid
Term
are alkenes more or less dense than water?
Definition
less dense
Term
type of intermolecular forces effect what physical properties?
Definition
melting point and boiling point
Term
is the connectivity the same in geometric isomers?
Definition
yes
Term
alkenes undergo what kind of reactions?
Definition
addition
Term
addition reactions
Definition
two compounds are added together to form one new compound
Term
in addition reactions, what happens to the double bond?
Definition
it disappears
Term
addition of hydrogen is called
Definition
hydrogenation
Term
the product of halogenation is a
Definition
haloalkane (alkyl halide)
Term
When naming halides have the same priority as (blank) groups
Definition
alkyl
Term
what is used in the lab to test for functional groups?
Definition
bromine
Term
in the lab, what happens to a solution that has an alkene or alkyne present when bromine is added?
Definition
the bromine quickly disappears
Term
hydrohaligenation
Definition
reactions with hydrogen halides
Term
hydrohalogenation works well with
Definition
HCl, HF, HBr, HI
Term
in hydrohalogenation the hydrogen adds to the carbon which...
Definition
already has the most hydrogens (markovnikovs rule)
Term
hydration must have what present?
Definition
sulfuric acid as a catalyst
Term
what type of reaction is hydration?
Definition
equilibrium
Term
polymer
Definition
very large molecule jmade up of repeating units
Term
monomers
Definition
starting materials
Term
copolymer
Definition
addition product made of two or more monomers
Term
Polymers shave how many dimensions?
Definition
two or three
Term
addition polymeration
Definition
addition reaction between double bonded compounds
Term
reaction mechanisms
Definition
the steps responsible for a reaction
Term
the reaction mechanism for hydration is similar to
Definition
hydrohalogenation
Term
hydration reaction step one
Definition
addtion of hydrogen
Term
hydration step 2
Definition
water adds to the carbocation
Term
hydration step 3
Definition
a hydrogen ion regenerated
Term
alkynes
Definition
compounds with triple bonds
Term
ethyne common name
Definition
acetylene
Term
alkynes are the named the same way as
Definition
alkenes
Term
are cis/trans possible for alkynes
Definition
no
Term
alkynes have a (blank) hybridization
Definition
sp
Term
aromatics are much less reactive than other compounds that contain
Definition
double or triple bonds
Term
what kind of reactions do aromatics undergo when they do react?
Definition
substitution reactions
Term
polycyclic aromatic compounds are often
Definition
carcinogenic
Term
why are polycyclic aromatic compounds carcinogens?
Definition
they intercalate into dna and cause mutations
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