Alkanes Flashcards Preview

Chemistry A Level > Alkanes > Flashcards

Flashcards in Alkanes Deck (13):
1

What is a homologous series?

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

2

What is a functional group?

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

3

What does aliphatic mean?

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

4

What does alicylic mean?

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

5

What does aromatic mean?

Containing a benzene ring

6

What do saturated and unsaturated mean?

Saturated = Containing only single C-C bonds
Unsaturated = Containing multiple carbon-carbon bonds, i.e C=C or triple bonded carbon.

7

What is the general formula for alkanes?

Cn H 2n+2

8

What are structural isomers?

Compounds with the same molecular formula but a different structural formula.

9

What is the standard alkane bond angle?

109.5 degrees

10

What do all alkanes produce when they burn?

Carbon dioxide and water

11

What is a radical?

A species with an unpaired electron

12

What are the three stages of radical substitution and what reactions can happen in each of them?

Let X be the halogen
1. Initiation
uv
X2 ------> X radical + X radical

2. Propagation
X radical + Alkane ---> (Alkane - H) radical + HX
or
(Alkane - H) radical + X2 ---> (Alkane - H + X) + X radical

3. Termination
Any two radicals reacting together

13

What is heterolytic fission?

When a bond breaks and each side of the bond takes one electron.