Addition

What do we call small molecules which can disrupt the intermolecular forces between the chains of a polymer? For example, those used to reduce the rigidity of PVC?

This structure shows a section of a polymer chain formed from the random polymerisation of two different monomers.

Which pair of monomers could produce this polymer?

• CH₂=CHF and CH₂=CHCF₃

• CH₂=CH₂ and CHF=CHCF₃

• CH₂=CH₂ and CH₂=CHCF₃

• CH2=CHF and CHCF3=CHF

The repeating unit of a polymer is shown

Which of the following molecules would form a polymer containing this repeating unit?

• But-1-ene

• (E)-but-2-ene

• (Z)-but-2-ene

• Methylpropene

Name the monomer from which this polymer was made.

The correct name for the alkene monomer which forms the polymer shown is

• 2-methyl-3-ethylpropene

• 2-methylpent-2-ene

• 2-methylpent-3-ene

• 4-methylpent-2-ene

Which of these statements about polyalkenes is incorrect?

• They are named after the parent alkene

• They are resistant to chemical attack

• They contain varying number of repeating units in each chain

• The chains are held together by VdWs

• They are vulnerable to attack by micro-organisms due to their non-polar bonds

Identify the monomer from which this polymer was made.

• But-1-ene

• (E)-but-2-ene

• (Z)-but-2-ene

• Any of these