Which statement explains why polyesters are condensation polymers?
A molecule of water forms each time an amide link forms.
A molecule of water forms each time an amine group reacts with a carboxylic acid group.
A molecule of water is absorbed each time a hydroxyl link is broken.
A molecule of water forms each time an alcohol group reacts with a carboxylic acid group.
83 exam-style questions on OCR GCSE Chemistry Organic chemistry. Each one has a worked solution and a mark scheme showing where the marks go.