This is the second edition of a textbook covering the Zimbabwe O-level Science examination. In line with the syllabus, the five major sections have been retained, while activities have been integrated into the relevant topics. Examples in the book relate to Zimbabwe.;At the end of the book there are questions taken from past GCE O level examination papers of the University of Cambridge Local Examinations Syndicate (UCLES). These have been updated to reflect recent changes to the syllabus and styles of question. There is a comprehensive glossary of terms which provide support for study and revision.