Unsaturated alkenes go through what type of polymerisation?

Is the molecular mass of a polymer high or low?

The addition polymerisation of alkenes produces long what?

Polymers are mainly plastics. Plastics can be BURNED, give one advantage to burning plastics

What is a disadvantage and a precaution taken with it, when BURNING plastics?

Waste plastics can also be BURIED when it is too technically difficult to recycle or when...

Give a disadvantage with BURYING waste

Waste plastics can also be REUSED, name 2 different ways that (after sorting), plastics can be reused

Why is Feedstock Recycling a good way to recycle easily?

What is a biodegradable polymer?

Name 3 examples of what a biodegradable polymer can be made from:

Before biodegradable polymers can be left to decompose, what has to happen to them?

Give an example of a use for a biodegradable plastic

A photodegradable polymer decomposes when exposed to what?