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    GCSE Exam GCSE Chemistry
                    
                        4.7.1.1 Crude oil hydrocarbons and alkanes
                    
                                    
                
                    
                        4.7.1.2 Fractional distillation and petrochemicals
                    
                                    
                
                    
                        4.7.1.3 Properties of hydrocarbons
                    
                                    
                
                    
                        4.7.1.4 Cracking and alkenes
                    
                                    
                