Module 4 NTR definitions

Question 1

What is the general formula?

Answer 1

The simplest algebraic formula of a member of a homologous series e.g. for an alkane: CnH2n+2

Question 2

What is structural formula?

Answer 2

The minimal detail that shows the arrangement of atoms in a molecule e.g. for butane: CH3CH2CH2CH3 or CH3(CH2)2CH3

Question 3

What is displayed formula?

Answer 3

The relative positioning of atoms and all of the bonds between them

Question 4

What is skeletal formula?

Answer 4

The simplified organic formula, shown by removing hydrogen atoms from alkyl chains, leaving just a carbon skeleton and associated functional groups

Question 5

What is an alkyl group?

Answer 5

Formula CnH2n+1

Question 6

What does aliphatic mean?

Answer 6

A compound containing carbon and hydrogen joined together in
straight chains, branched chains or non-aromatic rings

Question 7

What does alicyclic mean?

Answer 7

Are aliphatic compounds arranged in non-aromatic rings with or without side chains

Question 8

What does aromatic mean?

Answer 8

A compound containing a benzene ring

Question 9

What does saturated mean?

Answer 9

Single carbon-carbon bonds only

Question 10

What does unsaturated mean?

Answer 10

The presence of multiple carbon–carbon bonds, at least one C=C double bond, a C≡C triple
bond or an aromatic ring