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Paper 2 Matter and Materials
Organic Molecules
Organic molecular structures
· functional groups
· saturated and unsaturated structires
· isomers
· systematic naming
· formulae
Give condensed structural, structural and molecular formulae given the IUPAC name,
or give the IUPAC name given the formla for:
Alkanes
- maximum 8 carbons in the longest chain
- branched alkanes with maximum three alkyl substituents
- maximum two carbon atom per alkyl substituent
- number longest chain beginning at end nearest to first substituent
- arrange substituents alphabetical in name
- know that alkanes are our most important fuels (fossil fuels)
- combustion of alkanes (oxidation) is highly exothermic and carbon dioxide and water are produced:

Cycloalkanes
- maximum of 6 carbon atoms per ring
- maximum 3 alkyl substituents
- maximum 2 carbon atms per alkyl substituent
Alkenes
- maximum of 8 carbon atoms in the longest chain
- branched akenes with maximum 3 alkyl substituents
- maximum 2 carbon atoms per alkyl substituent
Cycloalkenes
- maximum of 6 carbon atoms per ring
- maximum 3 alkyl substituents
- maximum 2 carbon atoms per alkyl substituent
Dienes
- conjugated diens:
(two double bonds separated by a single bond)
- isolated dienes
(one or more saturated carbon atoms between two double bonds)
- cumulated diens
(two double bonds formed to one carbon atom)
- maximum 8 carbon atoms in the longest chain
- branched dienes with maximum 3 alkyl substituents
- maximum 2 carbon atoms per alkyl substituent
Alkynes
- maximum 8 carbon atoms in the longest chain
- branched alkynes with maximum 3 alkyl substituents
- maximum 2 carbon atoms per alkyl substituent
Haloalkanes
- maximum 8 carbon atoms in the longest chain
- branched haloalkanes
maximum two carbon atoms per alkyl group
- halo alkanes can have one or more X-groups attached
(X = F, Cl, Br or I
- number longest chain beginning at end nearest to first substituent
regardless of whether it is alkyl or halo
- give alphabetical preference to substituents when longest chain can be numbered from either side
- include cyclic haloalkanes for rings up to 6 carbons
eg. 1,2-dibromocyclohexane
Alcohols
- maximum 8 carbon atoms in the longest chain
- primary, secondary and tertiary alcohols
- branched alchols with maximum 3 alkyl substituents
- maximum 2 carbon atoms per alkyl substituent
- number longest chain beginning at end nearest to hydroxyl group
Carboxylic Acids
- maximum 8 carbon atoms in the longest chain
- branched carboxylic acids with maximum 3 alkyl substituents
- maximum 2 carbon atoms per alkyl substituents
- number longest chain beginning at end nearest to carboxyl group
Esters
- maximum 8 carbon atoms in alkyl group (unbranched) attached to oxygen i.e. alcohol side of ester
and maximum of 8 carbon atoms in carboxylic acid side (unbranched) of ester
- know that an ester is the product of an acid catalysed condensation between an alcohol and a carboxylic acid.
- identify the alcohol and carboxylic acis used to prepare a given ester and vice versa,
and write an equation to represent this preparation
Amines
- primary, secondary and tertiary alkyl-substituted amines
- maximum 8 carbons in the longest alkyl substituent (unbranched)
- use the longest chain as the stem in unsymmetrical secondary and tertiary amines
indicate the other alkyl groups attached to nitrogen using the prefix N- or N,N-
Amides
- alkyl-substituted amides
- maximum of 8 carbon atoms in the stem
i.e. the chain containing the carbon atom of the acyl group
- if nitrogen is further substituted,
name the substituents (maximum 3 carbon atoms) first preceded by N to identify them as directly substitued to the nitrogen
followed by the name of the parent amide
Aldehydes
- maximum 8 carbon atoms in the longest chain
- branched aldehydes with maximum three alkyl substituents
- maximum 2 carbon atoms per alkyl group
- number longest chain beginning at end nearest to carbonyl group
Ketones
- maximum of 8 carbos atoms in the longest chain
- branched ketones with maximum 3 alkyl substituents
- maximum 2 carbon atoms per alkyl group
- number longest chain beginning at end closest to carbonyl group
Arenes (benzene rings)
- maximum 3 alkyl substituents
NO other functional groups)
- maximum 2 carbon atoms per alkyl substituent
Explain the terms
- functional groups
- hydrocarbon
- saturated
- unsaturated
- homologous series
- isomer
(structural isomers only)
Identify compounds that are:
- saturated
- unsaturated
- isomers
(up to 8 carbon atoms)
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