Mark Scheme Causes of Human Disease Unit 5 Aqa

2262 Words10 Pages
Centre Number Surname Other Names Candidate Signature Candidate Number For Examiner’s Use Examiner’s Initials Question Mark General Certificate of Education Advanced Level Examination January 2012 1 2 3 Chemistry Unit 5 Energetics, Redox and Inorganic Chemistry 9.00 am to 10.45 am Wednesday 1 February 2012 CHEM5 4 5 6 7 For this paper you must have: l the Periodic Table/Data Sheet, provided as an insert (enclosed) l a calculator. 8 TOTAL Time allowed l 1 hour 45 minutes Instructions l Use black ink or black ball-point pen. l Fill in the boxes at the top of this page. l Answer all questions. l You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. l All working must be shown. l Do all rough work in this book. Cross through any work you do not want to be marked. Information l The marks for questions are shown in brackets. l The maximum mark for this paper is 100. l The Periodic Table/Data Sheet is provided as an insert. l Your answers to the questions in Section B should be written in continuous prose, where appropriate. l You will be marked on your ability to: – use good English – organise information clearly – use accurate scientific terminology. Advice l You are advised to spend about 70 minutes on Section A and about 35 minutes on Section B. (JAN12CHEM501) WMP/Jan12/CHEM5 CHEM5 2 Section A Answer all questions in the spaces provided. Do not write outside the box 1 This question is about magnesium oxide. Use data from the table below, where appropriate, to answer the following questions. ΔH / kJ mol–1 First electron affinity of oxygen (formation of O–(g) from O(g)) Second electron affinity of oxygen (formation of O2–(g) from O–(g)) Atomisation enthalpy of oxygen –142 +844 +248 1 (a) Define the term enthalpy of lattice dissociation.

More about Mark Scheme Causes of Human Disease Unit 5 Aqa

Open Document