Exam Board: OCR. Level: A-level. Subject: Chemistry. First Teaching: September 2015. First Exam: June 2017. Written by experienced author Mike Smith, this Student Guide for Chemistry: Identifies the key content you need to know with a concise summary of topics examined in the A-level specifications. Enables you to measure your understanding of exam tips and knowledge check questions, with answers at the end of the guide. Helps you to improve your exam technique with sample answers to exam-style questions. Develops your independent learning skills with content you can use for further study and research.