Summary Edexcel iGCSE Chemistry Revision notes on section 6 (organic compounds)

FUNCTIONAL GROUPS
Alkenes : Alcohols : Carboxylic acids :




Y &
H
H
Hy I
H H



&
ethene
c = c H -
C -
C
I
ethanol I
O
H
-
H
H it 0 C C ethanoic acid
- -

-
H &
H O H-
functional group functional group
-

: :


C =
c (C to (double bond) -

OH functional group :


-
COOH


EstersComo t
carboxylic
acid
>
-




HH
ester
O H
t water


⑧ I I Il I
H H
H I H C c 0 C C H + H20
1
- - - - - -



I /

H- C -
C t
/
C -
C
I
- H >
-
H it
it 0 -
H H -
0 H -
functional group
. !




ethyl ethamoate O


NAMING ORGANIC alcohol prefix + y1 then 0 -
11
C
S ester
link

carboxylic acid prefix + oate
COMPOUNDS
. of Carbons
No :


I : meth- allanes : -
and (Suffix more than one identical
2 :
eth- alkemes : -
ene (suffix) group :


(suffix) di (2)

o
alcohols : -
Ol ·




carboxylic : -
oic acid (suffix ·
tri (3)
pent- acid tetra (4)
I
·
/




esters : -

yl (alcohol suffix)
-
anoate (carboxylic
acid Suffix)

ELECTRICAL CONDUCTIVITY & METALS
lonic compounds :
only conduct electricity when molten or aqueous
the ions in an ionic compound are able to move when dissolved in a solution
↳ the compound will conduct electricity
made of a lattice of positive and negative ions
solid ionic compounds is don't conduct electricity
·




↳ the ions are unable to move around


Metallic Bonding !


metals have a giant structure of positive ions surrounded by a sea of delocalised electrons
metallic bonding :
the electrostatic attractions between the nuclei of the positives ions and electrons
↳
gives metals their properties
·
metals are congood Shaman
delocalised electrons are able to move through the structure

metals can conduct electricity
↳
energy is also transferred quickly through the material
↳ metals are good conductors of heat