Polymers

GROUP 1

100

Large molecules consisting of many repeating structural units are called 

polymer

200

What constitutes a polymer.

monomer

300

Explain how plastics such as poly(ethene) cause pollution?

produce toxic gases when burned and accumulate in the oceans

GROUP 2

100

Four statements about ethene or poly(ethene) are listed. 

1 Poly(ethene) is produced by an addition reaction. 

2 Ethene is a monomer. 

3 Poly(ethene) is a monomer. 

4 Poly(ethene) decolourises aqueous bromine. 

Which statements are correct?

Statements 1 and 2

200

Which equation represents an addition reaction? 

A CH3CHO + HCN ---> CH3CH(OH)CN 

B C₆H₆ + Br₂ ----> C₆H₅Br + HBr 

C NH₄Br ---->NH₃ + HBr 

D C₁₄H₃₀ ----->C₂H₄ + C₈H₁₈ + C₄H₈

A

300

Suggest the name of the polymer formed from propene and draw part of this polymer molecule to show three repeat units.

M1 chain of six C atoms joined by single bonds in a chain 

M2 three correctly placed CH₃ groups 

M3 correct structure AND continuation bonds

Group 3

100

When polymer chains grow off of another polymer chain

What is branching

200

When a polymer chain bonds to another polymer chain

What is Crosslinking

300

A polymer with irregular stereo chemistry

What is Atactic?