OCR A Chemistry – 'Y12 Polymers' 4.1.3j-l

extremely large molecules formed from thousands of repeat units are called

small molecules that can react to form a very long chain with repeating patterns in it

when alkenes combine to form a very long chain of C–C single bonds it is called

the smallest fragment that can be used to summarise a polymer

What does this general notation best represent?

• a repeat unit of a polymer

• a section of a polymer

• a monomer

• the structure of a polymer

What is the name of the monomer that forms this polymer by addition polymerisation?

What does this general notation best represent?

• a repeat unit of an addition polymer

• the structure of a polymer

• the number, n, of monomers

• a section of a polymer which is n units long

What is the name of the monomer that forms this polymer by addition polymersation?

Which pair of brackets contains the repeat unit for this polymer?

• (...)

• [...]

• {...}

Which pair of brackets correctly identifies the repeating unit in the section of the polymer shown here.

• [...]

• (...)

• {...}