1. Which statement best describes condensation polymerisation?

a) Unsaturated monomers add together to form the polymer as the only product
b) Monomers join but no small molecules are ever released
c) Monomers with two functional groups react, eliminating a small molecule each step
d) Ions in solution combine to form a giant lattice

2. Which pairing can react to make a typical polyester?

a) Diamine + dicarboxylic acid
b) Diol + diol
c) Alkene + alkene
d) Diol + dicarboxylic acid

3. The linkage formed in polyesters is called a(n)…

a) amide linkage
b) ester linkage
c) ether linkage
d) peptide linkage

4. In many polyester-forming steps, the small molecule eliminated is .

5. Polyesters are produced by reacting an alcohol called a with a diacid or more correctly a .

6. Which statement about the backbone of condensation polymers (like polyesters) is correct?

a) It consists only of carbon atoms with no heteroatoms such as oxygen or nitrogen
b) It contains heteroatoms such as oxygen in the linkages
c) It contains only C=C double bonds
d) It always alternates carbon and nitrogen atoms

7. Why can lactic acid form PLA without a second monomer?

a) It contains a C=C double bond
b) It has two carboxyl groups (–COOH) only
c) It has both –OH and –COOH groups, so it can self-condense
d) It releases no small molecules on polymerisation

8. When ethane-1,2-diol reacts with a dicarboxylic acid to form a polyester, the by-product is:

a) hydrogen
b) oxygen
c) ethene
d) water

9. In repeat-unit notation for polymers, the symbol written outside the square brackets to indicate “many units” is .

10. Which statement about condensation polymerisation is not correct?

a) The monomers are always unsaturated alkenes
b) Small molecules such as water may be released
c) Monomers typically have two reactive functional groups
d) The repeat unit is shown in brackets with an n