Give three reasons why fractions from crude oil are cracked

What does cracking produce?

Are Alkenes saturated or unsaturated

What Colour does Alkenes turn bromine water

Give two ways how hydrocarbon molecules be cracked

What is a polymer?

What makes Polymers?

What are plastics made of

What can alkenes be used to make?

Describe one use of a smart polymer

How does a Shape memory stitch work?

What does 'Biodegradeable' mean?

3 ways of reducing plastic waste

Outline the two ways that can be used to make ethanol and give an advantage and a disadvantage of each method.