Products from Oil (core)

Question 1

Give one reason why an oil company might want to crack large hydrocarbons to make smaller alkanes?

Answer 1

to make more useful fuels

Question 2

Give three properties of alkenes?

Answer 2

unsaturated, carbon-carbon double bond, more reactive

Question 3

How are polymers made?

Answer 3

monomers joined together

Question 4

How many monomers are there in a poly(ethene) molecule?

Answer 4

thousands

Question 5

Why can we make polymers from alkenes but not alkanes?

Answer 5

more reactive than alkanes

Question 6

What is a shape-memory polymer?

Answer 6

changes back to its original shape due to temperature change and other conditions

Question 7

Give two medical uses for polymers?

Answer 7

dental fillings, removable sticky plasters

Question 8

Give two non-medical uses for polymers?

Answer 8

waterproof fabrics, bottles

Question 9

How would using biodegradable plastics help with the problems of plastic litter?

Answer 9

the litter would decompose so not be left in the environment

Question 10

Describe two ways that cornstarch can be used to help with problems of disposal of plastic waste?

Answer 10

it can be used to make biodegradable plastics

Question 11

Give two reasons why fractions from crude oil are cracked?

Answer 11

to make alkenes, to make more useful fuels

Question 12

What two ways can be used to crack hydrocarbons?

Answer 12

heating hydrocarbon vapours and steam to a very high temperature
passing hydrocarbon vapours over a hot catalyst

Question 13

Is C5H12 an alkane or alkene?

Answer 13

alkene

Question 14

Is C3H6 an alkane or alkene?

Answer 14

alkane

Question 15

Is C4H10 an alkane or alkene?

Answer 15

alkene

Question 16

What does biodegradable mean?

Answer 16

can be broken down into the environment