The purpose of this guide is to assist students in their preparation for tests and examinations in the ATAR Chemistry course for Units 3 and 4. The coverage and structure of the topics will allow students to use the book throughout the year. This book follows the current Year 12 Western Australian ATAR Chemistry syllabus and is designed to meet WA curriculum needs and to prepare students for WACE examinations. It features an ATAR syllabus checklist, clear explanations and illustrations of core theory plus review questions and trial tests for students to check their progress. Fully worked answers are given to all review questions and trial tests.