Home of real teaching & learning
  • Full support for teachers
  • Focus on critical thinking
  • Engaging classroom activities
  • Integrated student eBook
  • Assessed tasks / qBank
  • Practice exam questions

The InThinking Guarantee: Our sites are written by expert practitioners and not by AI

See our AI policy

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Don't miss out, find out!

Polymers questions

1. (a) Explain why the atom economy for most addition polymers is close to 100%. (b) Nylon 6,6 can be made by reacting 1,6-diaminohexane, H2N-(CH2)6-NH2, with hexanedioyl dichloride, ClCO-(CH2)4-COCl. The reaction is a condensation reaction in which peptide bonds, –CO-NH–, are formed with the loss of hydrogen chloride.The equation for the reaction is:nH2N(CH2)6NH2 + nClOC(CH2)4COCl ⟶ H−[HN(CH2)6NHCO(CH2)4CO]n−Cl +...

Help