Organic chemistry

Question 1

General formula for aliases

Answer 1

CnH2n+2

Question 2

Alkanes are classified as what hydrocarbons?

Answer 2

Saturated hydrocarbons, because they are compounds containing hydrogen and carbon only

Saturated = single bonds only

Question 3

What is needed in a alkane and halogen reaction

Answer 3

UV radiation

Question 4

Alkane and halogen reaction

Answer 4

Alkane + halogen - halogenoalkane + halogen halide

Question 5

When does complete combustion occur

Answer 5

When there is plenty of oxygen

Question 6

When does incomplete combustion occur

Answer 6

If oxygen is not available so readily

Question 7

General formula for alkenes

Answer 7

CnH2n

Question 8

Alkanes:

Answer 8

Form a homologous series
Saturated hydrocarbons
Relatively unreactive

Question 9

Alkenes contain the functional group….

Answer 9

> c=c

Question 10

What do both alkanes and alkenes react with

Answer 10

Bromine (brown liquid)

Question 11

Alkene + bromine

Answer 11

• dibromoalkane

Question 12

What reacts quickly with bromine and decolourises it

Answer 12

Alkenes

Addition

Question 13

Which reaction is slower with bromine

Answer 13

Alkanes

Substitution

Question 14

Bromine experiment

Answer 14

1) add one of the organic compounds to the test tube
2) add 1cm3 of bromine water
3) add a hung to the tube and shake gently
4) record observations

Question 15

What is a homologous series

Answer 15

A family of hydrocarbons with similar chemical properties who share the same general formula

Question 16

What is a functional group

Answer 16

A specific grouping of elements that is a characteristic of a class of compounds, and determines some properties and reactions of that class

Question 17

What are isomers

Answer 17

Molecules that have the same molecular formula but have a different arrangement of atoms in space