Key Words

Question 1

Aliphatic

Answer 1

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

Question 2

Alicyclic

Answer 2

An aliphatic compound arranged in non aromatic rings with or without side chains

Question 3

Aromatic

Answer 3

A compound that contains a benzene ring

Question 4

Functional group

Answer 4

A group of atoms responsible for the characteristic reactions of a compound

Question 5

Homologous series

Answer 5

A series of organic compounds having the same functional group but with each successive member differing by CH2

Question 6

Alkyl group

Answer 6

Side group with formula CnH2n+1

Question 7

Saturated

Answer 7

Single carbon-carbon bonds only

Question 8

Unsaturated

Answer 8

Multiple carbon carbon bonds inc c=c and aromatic rings

Question 9

Structural isomers

Answer 9

Molecules with the same molecular formula but different structural formula

Question 10

Stereoisomers

Answer 10

Same structural formula but different arrangements of atoms in space

Question 11

Fraction

Answer 11

A group of hydrocarbons with similar boiling points - similar properties and uses

Question 12

Fractional distillation

Answer 12

A method that uses differences in bps to separate crude oil into fractions

Question 13

Combustion

Answer 13

Reaction with oxygen

Question 14

Homolytic fission

Answer 14

The breaking of a covalent bond where one of the bonded electrons goes to each atom

Question 15

Heterolytic fission

Answer 15

The breaking of a covalent bond where both the electrons go to one atom forming a cation and an anion

Question 16

Radical

Answer 16

Species with an unpaired electron

Question 17

Mechanism

Answer 17

A sequence showing the path taken by electrons in a reaction

Question 18

Electrophile

Answer 18

An electron pair acceptor which is attracted to an electron-rich centre

Question 19

Carbocation

Answer 19

An organic ion in which a carbon atom has a positive charge