Alkanes And Alkenes

Question 1

What alkene does not exist?

Answer 1

Methene

Question 2

A homologous series is what?

Answer 2

A family of compounds with similar chemical properties and a general formula

Question 3

What are isomers

Answer 3

Molecules with the same molecular formula but a different structure

Question 4

What are cycloalkanes and alkenes?

Answer 4

Isomers

Question 5

How do you name an alkene structure?

Answer 5

Name the longest chain, look which carbon any CH3 connects to
e.g. 2,3- dimethylheptane

Question 6

How do you signify where the double bond is in a name of a structure?

Answer 6

E.g. Pent-2-ene

Question 7

Is an alkane saturated?

Answer 7

Yes, alkenes aren’t saturated

Question 8

What is the test for saturation?

Answer 8

Bromine solution

Alkenes decolourise - orange/brown to colourless

Question 9

If Bromine is reacted with an alkene where does it go within the structure?

Answer 9

They go where the double bond lies

Question 10

Alkenes Reacted with water make what?

Answer 10

Alkanols

Question 11

What is the functional group of alkanols

Answer 11

Hydroxyl (OH)

Question 12

How do we know an alkane is an alcohol?

Answer 12

It has ‘ol’ at the end e.g. Pentanol

Question 13

An alkanoic acid is known as what? And what is it’s functional group?

Answer 13

Carboxylic acid

COOH (carboxyl group)

Question 14

Methane, ethane, propane, X, pentane, Y - name X and Y

Answer 14

X - butane

Y - hexane