Polymer

Question 1

LDPE

Answer 1

Low density Polymer- High number of side branches. makes them soft

Question 2

HDPE

Answer 2

High density Polyer- Low number of side branches. makes them hard and rigid

Question 3

Thermosetting polymer

Answer 3

When there are a lot of Cross links. making it hard and impossible to mould back. chars when heated

Question 4

Thermoplastic Polymer

Answer 4

Low amount of Cross links. which makes them soft and able to be remoulded when heated.

Question 5

Isotatic

Answer 5

When side branches are arranged on the same side of a linear polymer making them rigid and tough

Question 6

Atoctic

Answer 6

Side branches occur at irregular points on both side of the chain of linear polymers. makes them soft and waxy with little potential of use.

Question 7

Writting an addition polymer Etc Butene C-C=C-C

Answer 7

Propane intervalsc-c-c | c-c-c | c-c-c

Question 8

General structural model for polymer materials and the forces existing between chains

Answer 8

Dispersion forces

Question 9

What is a plasticiser?

Answer 9

Plasticsers go in-between carbon chains and pull them apart from each other making the polymer more flexible.

Question 10

Advantages and disadvantages of the use of polymers

Answer 10

Advantages -Can be modelled into any shape- Dont corrode-Are good insulators of electricityDisadvantages -Takes up a long time to decompose- Takes up space in landfill- Cause pollutions