Nomenclature

Question 1

Systematic nomenclature can be used to

Answer 1

name organic compounds and therefore make it easier to refer to them

Question 2

The alkanes provide the basis of the naming system and the stem of each name indicates how many carbon atoms are in the

Answer 2

longest chain in one molecule of the compound

Question 3

If there are any side-chains or functional groups present, then the position of these groups is indicated by

Answer 3

numbering the carbon atoms in the longest chain starting at the end that gives the lowest possible numbers in the name

Question 4

The hydrocarbon side-chain is shown in brackets in the structural formula
CH3CH(CH3)CH2CH3

Question 5

The side-chain is named by adding ‘-yl’ to the normal alkane stem
This type of group is called an

Answer 5

alkyl group

Question 6

If there are more than one of the same alkyl side-chain or functional groups,

what names for 2,3,4

The adjacent numbers have a

Numbers are separated from words by a

Answer 6

di- (for two), tri- (for three) or tetra- (for four) is added in front of its name

The adjacent numbers have a comma between them

Numbers are separated from words by a hyphen

Question 7

If there is more than one type of alkyl side-chain, they are listed in

Answer 7

alphabetic order

Question 8

An aliphatic compound is

and also includes cyclic organic compounds that do not contain …….

Answer 8

An aliphatic compound is straight or branched-chain and also includes cyclic organic compounds that

benzene ring.