Not too sure whether you're refering to this. I'll tell you
mine. =)
GCE O Level Chemistry Matters (Text book).
Marshall Cavendish Education.
ISBN 978-981-01-6463-8

(https://www.popular.com.sg/)
Page 432 - 444
(I bought this text book just to teach a student who is using
teach book.) =.="
Yes it is this. It should be chapter 25, pg 432-446.
When I first saw this book I also thought 445 and 446 are not
under chapter 25, but when I saw 'macromolecules' on the side, I
realise the 2 pages are also part of this final chapter.