It covers four external Achievement Standards: Chemistry 1.3 Demonstrate understanding of aspects of carbon chemistry Chemistry 1.4 Demonstrate understanding of aspects of selected elements Chemistry 1.5 Demonstrate understanding of aspects of chemical reactions Science 1.5 Demonstrate understanding of aspects of acids and bases This workbook has brief exam revision notes for end-of-year study, with examples and NCEA exam questions from 2020 and earlier years. Full answers with explanations and A, M, and E grades are given. Use this workbook all year round or during Terms 3 and 4 to revise and practise exam questions.