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Organic Chemistry ch 14
Terms, etc. relating to Org. Chem
23
Chemistry
12th Grade
01/17/2006

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Term
Stereoisomers
Definition
molecules with the same sequence of atoms but different orientation of groups in space
Term
Optical Isomers
Definition
A structure & its mirror image which cannot be superimposed on each other (enantiomers), rotate light(polarized) differently
Term
Asymmetric
Definition
No plane of symmetry
Term
Chiral Center
Definition
an atom that is bonded to 4 different groups
Term
D-isomer/Dextrorotary
Definition
Rotates polarized light RIGHT
Term
L-isomer/Levorotary
Definition
Rotates polarized light LEFT
Term
Organic Chemistry
Definition
Chemistry of C atom
Term
Catenation
Definition
C's ability to bond repeatedly to itself
Term
Saturated Hydrocarbons
Definition
No multiple bonds, saturated with H
Term
Unsaturated Hydrocarbons
Definition
contains double or triple bond(s)
Term
Straight Chains/Normal H-C
Definition
No Branches, not really straight
Term
Not Normal H-C
Definition
Branched
Term
Gen. Formula of Alkane
Definition
CnH(2n+2)
Term
Isomers
Definition
molecules with the same molecular formulas but different structural formulas
Term
IUPAC
Definition
International Union of Pure & Applied Chemists, Nomenclature system
Term
Conformations
Definition
One specific geometry of a molecule
Term
paraffin
Definition
reactivity of sat. H-C not enough activity, needs E/very reactive particle(free radical)
Term
Halogenation
Definition
Reaction of H-C and halogen
Term
mechanism
Definition
complicated free radical substitution need high temp(flame) to initiate reaction
Term
combustion engine
Definition
combustion of H-C produces large volumes of gases & large amounts of heat. Rapid formation of gases @ high T & P drives pistons/turbine blades
Term
knocking
Definition
gas burns too rapidly, piston receives single hard slam, knocking/pinging sound, reduced efficiency
Term
octane number
Definition
measure of resistance to knock(add MTBE to improve)
Term
pyrolysis/cracking
Definition
converts straight-chain alkanes into more desirable branched-chain ones
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