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OCR AS Chemistry unit 2 F322 Definitions to learn
Module 1 ­ Basic concepts and Hydrocarbons

You need to be able to describe and explain these terms;


Structural isomers a re
comp ou nds wit
h the
s ame
mo lecu lar
fo r
mu l
a bu t
differ…

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Module 2 ­ Alcohols, Halogenalkanes and analysis

Definitions;

A Nucleophile i
s an
atom
att
ract
ed
to
an
elect
ron
def
ici
ent
at
om
or
cent
re
w her
e i
t
donat
es
a
pai
r
of
elect
rons
to
for
m a
new coval
ent
bond.…

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Module 3 ­ Energy

Definitions

Exothermic reaction a react
ion
in whic h
the ent
h al
py of
the
p roducts
is
sma l
ler tha n
th e
e nthal
p y
of the
re actant
s resul
ti
ng to
he at
l
o s s t…

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Le chatelier's principle
says
w hen
a syst
em i
n dynami
c eq ui
li
bri
um
is
subj
ect
t
o a
change,

t he
posi
ti
o n of
e quil
ibri
um wi
ll
shi
ft
t
o mini
mize
the
change.











Module 4 ­ Resources…

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