20.1Addition Polymerisation and Disposal of Polymers

These flashcards cover key concepts related to addition polymerisation and the disposal of polymers, focusing on definitions, processes, and environmental impacts.

What is addition polymerisation?

Addition polymerisation is the reaction in which many monomers containing at least one C-C double bond form long chains of polymers as the only product.

What are monomers in addition polymerisation?

Monomers are small, reactive molecules that react together to form a polymer.

What is a repeat unit in a polymer?

A repeat unit is the smallest group of atoms that, when connected one after the other, make up the polymer chain and is represented by square brackets.

How are repeat units different from monomers?

The repeat unit is the same as the monomer except that the C=C double bond is changed to a C-C single bond.

What is poly(ethene) made from?

Poly(ethene) is made from the monomer ethene.

What issue arises from the disposal of poly(alkenes)?

Poly(alkenes) are non-biodegradable, take hundreds of years to decompose, and contribute to long-term environmental pollution.

What happens when poly(alkenes) are burned?

Burning poly(alkenes) results in harmful combustion products that can cause environmental pollution.

What is the importance of addition polymerisation in the plastic industry?

Addition polymerisation forms the basis of the plastic industry by enabling the creation of polymers such as polythene and PVC.

Why are poly(alkenes) considered unreactive?

Poly(alkenes) are large alkane molecules that do not undergo chemical reactions, making them resistant to chemical attack.

What are the consequences of throwing away poly(alkenes)?

Throwing away poly(alkenes) causes long-term pollution of the environment.