Polyamides, such as nylon, are a class of high-strength synthetic condensation polymers. They can be manufactured by reacting a diamine monomer with a dicarboxylic acid monomer.
Figure 1 shows a simplified representation of the repeating unit of a polyamide chain.

State the chemical formula of the small molecule that is released as a side-product during this condensation polymerisation reaction.
Practise Edexcel GCSE Chemistry Polymers with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.