Polymerisation

Which statement concerning poly(chloroethene) is true?

Feb/March 2016

Poly(ethene) and PVC are both addition polymers. Which of the following statements are correct?

Feb/March 2018

The sequence shown below is present in a polymer molecule. Which monomer would be able to form this polymer by addition polymerisation?

Feb/March 2022

Fig. 4.1 illustrates several reactions of compound D, 2-bromobutane.

Feb/March 2023

When 1,1-dichloroethene undergoes polymerisation, it forms a material with a high density and a high melting point that is impermeable to gases. It is used as cling wrapping. Which arrangement is found in a short section of the polymer chain?

May/June 2010

Polymerisation of 1,1-dichloroethene gives a compact substance with a high melting point that does not let gases pass through. It is used for cling wrapping. Which repeating sequence is found in a short section of the polymer chain?

May/June 2010

Synthetic resins, plasticisers and many other chemicals may be produced through polymerisation of a range of monomers, including prop-2-en-1-ol, $\text{CH}_2{=}\text{CHCH}_2\text{OH}$. Which structure shows the repeat unit in poly(prop-2-en-1-ol)?

May/June 2013

When ethene undergoes polymerisation, poly(ethene) is produced. How does the carbon-carbon bond in poly(ethene) differ from the bond in ethene?

May/June 2013

Which statement does not accurately describe a problem associated with disposing of PVC?

May/June 2014

The diagram illustrates the structure of addition polymer, $X$. Which reagents would react with polymer $X$?

May/June 2016

Synthetic resins may be produced by polymerising a range of monomers, one of which is prop-2-en-1-ol, $\text{CH}_2=\text{CHCH}_2\text{OH}$. Which structure shows the repeat unit of poly(prop-2-en-1-ol)?

May/June 2016

Which of the following statements about poly(alkene)s are true?

May/June 2019

Which changes are usually involved when an addition polymer is formed?

May/June 2021

A single molecule of an addition polymer with 2000 repeat units has an $M_r$ of $112000$. The polymer molecule contains chiral centres. Which monomer could be a possible precursor for this polymer?

May/June 2022

In polymer G, each carbon atom in the polymer chain is attached to one hydrogen atom and one methyl group. Which alkene could be polymerised to produce polymer G?

May/June 2023

Compound W, $\text{CH}_2=\text{CHCN}$, is used in the production of an addition polymer that is found in carbon fibres.

May/June 2023

The diagram displays two repeat units of an addition polymer. What monomer formed this polymer?

May/June 2024

By using a variety of modern spectroscopic methods, astronomers have detected evidence of many molecules, ions and free radicals in dust clouds in Space. Many of these species have also been made in laboratories on Earth.

Oct/Nov 2010

A polymer molecule contains the sequence shown. Which monomer could have formed this polymer through addition polymerisation?

Oct/Nov 2012

Which repeating unit could be present in the chain formed when polymerising $\mathrm{1,1\text{-}dichloroethene}$?

Oct/Nov 2013

PVC can be troublesome to dispose of. Two possible ways are burial in landfill sites and disposal by burning. Which row in the table is the correct one?

Oct/Nov 2016

PVC is hard to dispose of. Two possible ways are placing it in landfill sites and disposing of it by combustion. Which row in the table is correct?

Oct/Nov 2016

A portion of an addition polymer chain is illustrated. $\,-\text{CH}-\text{CH}_2-\text{CH}_2-\text{CH}-\,$ with a $\text{Cl}$ group attached to each $\text{CH}$. Which monomer might have been used to produce this polymer?

Oct/Nov 2017

A portion of an addition polymer chain is displayed. Which monomer could have been used to form this polymer?

Oct/Nov 2017

Polyethene is produced through the polymerisation of ethene. Which statement is correct?

Oct/Nov 2018

Which molecular formulae can correspond to at least one compound that is able to undergo addition polymerisation?

Oct/Nov 2021

Which characteristic occurs in both ethene and poly(ethene)?

Oct/Nov 2023