The new Third Edition matches the requirements of the revised Cambridge IGCSE Chemistry syllabus (0620). The Cambridge IGCSE Chemistry Teacher's Resource CD-ROM supports the content of the Cambridge IGCSE Chemistry Coursebook and Workbook. It contains: answers to the questions in the Coursebook; answers to exercises in the Workbook; student worksheets; answers for the worksheets; teaching notes; practicals; guidance notes for practicals; video clips to illustrate concepts.