information in answer is relevant, clear, cracking converts large organised and presented in a structured hydrocarbon molecules into smaller ones and coherent format. Specialist terms are cracking converts less useful used appropriately. Few, if any, errors in hydrocarbons into more useful grammar, punctuation and spelling. hydrocarbons (5-6 marks) cracking converts named Level 2 fractions that are in excess into named Answer identifies at least one correct fractions that are in short supply e.g. condition and applies limited knowledge bitumen or paraffin into petrol or diesel of cracking to explain why at least one the table shows that petrol and fraction from the table could be cracked. diesel are in short supply For the most part the information is the table shows that bitumen and relevant and presented in a structured paraffin are in excess and that these are and coherent format. Specialist terms are large molecules used for the most part appropriately. There are occasional errors in grammar, punctuation and spelling. (3-4 marks) 1 Answer includes one condition and some idea about using cracking to make more useful products. Answer may be simplistic. There may be limited use of specialist terms. Errors of grammar, punctuation and spelling prevent communication of the science. (1-2 marks) 0 Insufficient or irrelevant science. Answer not worthy of credit. (0 marks) B1C1P1 Specimen H – Cracking is an important reaction that takes place within an oil refinery. Cracking converts large hydrocarbon molecules into more useful smaller hydrocarbon molecules.
information in answer is relevant, clear, organised and presented in a structured and coherent format. Specialist terms are used appropriately. Few, if any, errors in grammar, punctuation and spelling. (5-6 marks) Level 2 Answer identifies at least one correct condition and applies limited knowledge of cracking to explain why at least one fraction from the table could be cracked. For the most part the information is relevant and presented in a structured and coherent format. Specialist terms are used for the most part appropriately. There are occasional errors in grammar, punctuation and spelling. (3-4 marks) 1 Answer includes one condition and some idea about using cracking to make more useful products. Answer may be simplistic. There may be limited use of specialist terms. Errors of grammar, punctuation and spelling prevent communication of the science. (1-2 marks) 0 Insufficient or irrelevant science. Answer not worthy of credit. (0 marks) cracking converts large hydrocarbon molecules into smaller ones cracking converts less useful hydrocarbons into more useful hydrocarbons cracking converts named fractions that are in excess into named fractions that are in short supply e.g. bitumen or paraffin into petrol or diesel the table shows that petrol and diesel are in short supply the table shows that bitumen and paraffin are in excess and that these are large molecules B1C1P1 Specimen – H Cracking is an important reaction that takes place within an oil refinery. Cracking converts large hydrocarbon molecules into more useful smaller hydrocarbon molecules.
Chemistry-6-mark-questions.docx