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IB Chem I
fml
18
Chemistry
11th Grade
04/19/2010

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Term
Heterolytic fission
Definition
The breaking of a bond in a compound in which the two fragments are oppositely charged ions

HCl → H++Cl−
Term
Homolytic Fission
Definition
When a bond breaks in a compound that has fragments that are uncharged free radicals
A:B--> A: B:
Term
Propagation
Definition
the chain reaction itself
Term
Termination
Definition
when 2 radical centres come together and for. {C-C}n
Term
Free Radical
Definition
atoms that have unpaired electrons on a pen shell configuration. highly reactive
Term
Substition reaction
Definition
When an atom or radical is replaced by another one in a chemical
Term
Hydrogenation
Definition
Chemical reaction that happens form the addition of H2
Term
Acid-catalyzed hydrolysis
Definition
a reaction that can be used to make alchols
Term
Combustion
Definition
results in CO2+H20
Term
Incomplete combustion
Definition
results in CO2+H2O+CO+CH2O
Term
Nuleophilic substitution
Definition
carbon is bonded to an atom that is electronegative, can go through substitutions, electronegative atom is replaced by another atom.
Term
Nucleophile
Definition
Have lone pair electrons (OH,CN,NH3, halide ions)
Term
Leaving group
Definition
separates form the molecule
Term
Transition State
Definition
Formation of Carbocation
Term
Polymer
Definition
Large molecule that consist of repeating structural units that are usually by covalent chemical bonds
Term
Polymerization
Definition
is a process of reacting monomer molecules together in a chemical reaction to polymers
Term
Initiator
Definition
reactant undergoes homolytic fission to create radicals and start reaction
Term
Reaction Mechanism
Definition
The step by step sequence of beginning reaction by which overall chemical change occurs
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