The structure of a polymer is shown. Which monomer is used to make this polymer?

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_w18_qp_23 Year：2018 Question No：40

Answer:

11.8.1. Define polymers as large molecules built up from many smaller molecules called monomers

11.8.10.1. nylon, a polyamide

11.8.10.2. PET, a polyester The full name for PET, polyethylene terephthalate, is not required

11.8.11. State that PET can be converted back into monomers and re-polymerised

11.8.12. Describe proteins as natural polyamides and that they are formed from amino acid monomers with the general structure:

11.8.13. Describe and draw the structure of proteins as:

11.8.2. Describe the formation of poly(ethene) as an example of addition polymerisation using ethene monomers

11.8.3. State that plastics are made from polymers

11.8.4. Describe how the properties of plastics have implications for their disposal

11.8.5.1. disposal in land fill sites

11.8.5.2. accumulation in oceans

11.8.5.3. formation of toxic gases from burning

11.8.6. Identify the repeat units and / or linkages in addition polymers and in condensation polymers

11.8.7. Deduce the structure or repeat unit of an addition polymer from a given alkene and vice versa

11.8.8.1. polyamides from a dicarboxylic acid and a diamine

11.8.8.2. polyesters from a dicarboxylic acid and a diol

11.8.9. Describe the differences between addition and condensation polymerisation