Cambridge Checkpoints Preliminary Chemistry Author:Roger Slade, Maureen Slade Study as you go with Cambridge Checkpoints. Updated annually to provide the most up-to-date exam preparation available, Cambridge Checkpoints provides everything you need to prepare for your exams in a go-anywhere format that fits easily into your school bag. ? Recent official exam papers with suggested responses ? Hundreds of additional past e... more »xam and exam-style questions with answers ? Dot point summaries of key topics and concepts to help you pinpoint where you need further revision« less