Chemistry 0620 · IGCSE · Polymers

Polymers — practice question

(a(i))[3]

Use the bond energies in the table to calculate the energy change, in kJ/mol, for the reaction. Work through these steps.

(a(ii))[1]

Deduce whether the reaction’s energy change is exothermic or endothermic. Support your answer with a reason.

(b(i))[1]

State how many monomer units are needed to make the section of polymer shown.

(b(ii))[3]

Name and draw the structure of the monomer that is used to make this polymer. Show every atom and every bond.

(b(iii))[1]

State the empirical formula for the polymer.

(c(i))[1]

Name the type of reaction by which proteins are broken down into amino acids.

(c(ii))[2]

Name two kinds of substance used to break proteins down into amino acids.

(c(iii))[3]

Name the method used to separate the amino acids. Name the kind of substance used to detect the amino acids. Give the symbol of the value used to identify each amino acid after separation and detection.

(d(i))[1]

Name a synthetic polyamide.

(d(ii))[2]

Identify the two functional groups found in the monomers used to make synthetic polyamides.

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