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           E: gcsescience@aqa.org.uk                                                                                                                                      SCIENCE: 
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                                                                                                                                                                          (8464)
                                                                                                                                                                          Specification
                                                                                                                                                                          For teaching from September 2016 onwards
                                                                                                                                                                          For exams in 2018 onwards
                                                                                                                                                                          Version 1.1 04 October 2019
           aqa.org.uk
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                                            AQA GCSE Combined Science: Trilogy 8464. GCSE exams June 2018 onwards. Version 1.1 04 October 2019
            Contents
            1 Introduction                                                       5
                  1.1 Why choose AQA for GCSE Combined Science:
                        Trilogy                                                  5
                  1.2 Support and resources to help you teach                    6
            2 Specification at a glance                                          9
                  2.1 Subject content                                            9
                  2.2 Assessments                                                9
            3 Working scientifically                                           13
            4 Biology subject content                                          19
                  4.1 Cell biology                                              20
                  4.2 Organisation                                              26
                  4.3 Infection and response                                    34
                  4.4 Bioenergetics                                             39
                  4.5 Homeostasis and response                                  42
                  4.6 Inheritance, variation and evolution                      49
                  4.7 Ecology                                                   59
                  4.8 Key ideas                                                 65
            5 Chemistry subject content                                        67
                  5.1 Atomic structure and the periodic table                   67
                  5.2 Bonding, structure, and the properties of matter          75
                  5.3 Quantitative chemistry                                    84
                  5.4 Chemical changes                                          88
                  5.5 Energy changes                                            95
                  5.6 The rate and extent of chemical change                    98
                  5.7 Organic chemistry                                        104
                  5.8 Chemical analysis                                        107
                  5.9 Chemistry of the atmosphere                              110
                  5.10 Using resources                                         115
                  5.11 Key ideas                                               120
            6 Physics subject content                                        121
                  6.1 Energy                                                   121
                  6.2 Electricity                                              127
                  6.3 Particle model of matter                                 135
                  6.4 Atomic structure                                         138
                  6.5 Forces                                                   143
                  6.6 Waves                                                    155
                                           Visit aqa.org.uk/8464 for the most up-to-date specification, resources, support and administration   3
                  6.7 Magnetism and electromagnetism                        159
                  6.8 Key ideas                                             162
            7 Scheme of assessment                                        163
                  7.1 Aims and learning outcomes                            163
                  7.2 Assessment objectives                                 164
                  7.3 Assessment weightings                                 165
            8 General administration                                      167
                  8.1 Entries and codes                                     167
                  8.2 Overlaps with other qualifications                    167
                  8.3 Awarding grades and reporting results                 167
                  8.4 Resits and shelf life                                 168
                  8.5 Previous learning and prerequisites                   168
                  8.6 Access to assessment: diversity and inclusion         168
                  8.7 Working with AQA for the first time                   169
                  8.8 Private candidates                                    169
            9 Mathematical requirements                                   171
            10 Practical assessment                                       173
                  10.1 Use of apparatus and techniques                      173
                  10.2 Required practical activities                        175
            11 Appendix A: Periodic table                                 193
            12 Appendix B: Physics equations                              195
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                     aqa.org.uk/8464
               •     We will write to you if there are significant changes to the specification.
            4   Visit aqa.org.uk/8464 for the most up-to-date specification, resources, support and administration