1113_2Sciences00 - Centre Number Candidate Number Name...

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Centre Number Candidate Number Name UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint SCIENCE 1113/02 Paper 2 November 2005 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen in the spaces provided on the Question Paper. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all questions. You may use a soft pencil for any diagrams, graphs or rough working. You should show all your working in the booklet. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 15 printed pages and 1 blank page. IB05 11_1113_02/FP UCLES 2005 [Turn over
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2 © UCLES 2005 1113/02/N/05 1 A boy wants to test various objects to see if they conduct electricity. He sets up the circuit shown below. object X (a) Name a component which the boy can connect at X to show whether a current passes through the circuit. [1] (b) What word is used to describe an object which does not conduct electricity? [1] (c) The boy uses this circuit to test various objects. Tick the box beside each object which conducts electricity. brass rod graphite centre from a pencil piece of rubber tubing plastic ruler wooden casing from a pencil [2]
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3 © UCLES 2005 1113/02/N/05 [Turn over 2 The table gives the names, colours and solubility in water of four compounds. name colour solubility copper carbonate green insoluble iron sulphate green soluble sodium chloride white soluble zinc carbonate white insoluble The compounds were added to separate beakers of water. Sufficient water was present for the soluble compounds to dissolve completely. The contents of each beaker were then filtered. (a) One of the compounds left a green solid on the filter paper. (i) What is the name of this compound? [1] (ii) What would be the colour of the filtrate? [1] (b) Describe how you would obtain pure crystals of sodium chloride from a mixture of solid sodium chloride and solid zinc carbonate.
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