AQA-CH1HP-QP-JUN12 - Centre Number For Examiners Use Candidate Number Surname Other Names Examiners Initials Candidate Signature Question General

AQA-CH1HP-QP-JUN12 - Centre Number For Examiners Use...

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General Certificate of Secondary Education Higher Tier June 2012 Science A CH1HP Unit Chemistry C1 Chemistry Unit Chemistry C1 Friday 15 June 2012 1.30 pm to 2.30 pm For this paper you must have: a ruler the Chemistry Data Sheet (enclosed). You may use a calculator. Time allowed 1 hour Instructions Use black ink or black ball-point pen. Fill in the boxes at the top of this page. Answer all questions. You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. Do all rough work in this book. Cross through any work you do not want to be marked. Information The marks for questions are shown in brackets. The maximum mark for this paper is 60. You are expected to use a calculator where appropriate. You are reminded of the need for good English and clear presentation in your answers. Question 3(b) should be answered in continuous prose. In this question you will be marked on your ability to: – use good English – organise information clearly – use specialist vocabulary where appropriate. Advice In all calculations, show clearly how you work out your answer. CH1HP H (JUn12CH1Hp01) K84796 6/6/6 Centre Number Candidate Number Surname Other Names Candidate Signature For Examiner’s Use Examiner’s Initials Question Mark 1 2 3 4 5 6 7 8 TOTAL
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2 (02) G/K84796/Jun12/CH1HP Do not write outside the box There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED
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3 Do not write outside the box (03) G/K84796/Jun12/CH1HP Turn over Answer all questions in the spaces provided. 1 The diagrams show the electronic structure of four different atoms. Atom D Atom C Atom B Atom A Use the Chemistry Data Sheet to help you to answer these questions. 1 (a) Name the two sub-atomic particles in the nucleus of an atom. ............................................................................................................................................ (1 mark) 1 (b) Why is there no overall electrical charge on each atom? ............................................................................................................................................ ............................................................................................................................................ (1 mark) 1 (c) Why is Atom A unreactive? ............................................................................................................................................ (1 mark) 1 (d) Which two of these atoms have similar chemical properties? Give a reason for your answer. ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ (2 marks) ____ 5
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4 Do not write outside the box (04) G/K84796/Jun12/CH1HP 2 Rutile is an ore of titanium. Rutile contains titanium dioxide. The flow chart shows how titanium metal is extracted from titanium dioxide. Electrolysis Chlorine Reactor 1 Heat to 900 ° C Reactor 2 Heat to 1100 ° C in an atmosphere of argon and allow to cool Magnesium chloride Magnesium Titanium metal Titanium chloride Titanium dioxide Carbon Carbon dioxide 2 (a) Titanium is much more expensive than iron. Give one reason why. ............................................................................................................................................ ............................................................................................................................................ (1 mark) 2 (b) Name the only waste product shown on the flow chart. ............................................................................................................................................ (1 mark)
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5 Do not write outside the box (05) G/K84796/Jun12/CH1HP Turn over 2 (c) Describe the example of recycling shown on the flow chart. ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ (2 marks) 2 (d) The air is removed from Reactor 2 . An atmosphere of argon is used for the reaction between titanium chloride and magnesium metal.
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