General Certificate of Education Advanced Level *0281936391* CHEMISTRY Paper 5 Planning‚ Analysis and Evaluation 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. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. DO NOT WRITE IN ANY
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Name: __________________________________ ( ) Class: 4Q HWA CHONG INSTITUTION PRELIMINARY EXAMINATION 2010 CHEMISTRY 5072 Paper 1 Time: 1 hour INSTRUCTIONS TO CANDIDATES Do not turn the pages over until you are told to do so. Write your name and index number on the answer sheet in the spaces provided. There are forty questions on this paper. Attempt all questions. For each question‚ there are four possible answers labelled A‚ B‚ C and D. Choose the one you consider correct and
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eating acid foods cooked in uncoated copper cookware‚ or from exposure to excess copper in drinking water or other environmental sources. Contents * 1 Toxicity * 2 Symptoms and presentation * 3 EPA cancer data * 4 Treatment * 5 Cookware * 6 Non-sparking tools * 7 Drinking water * 8 Water tank connection * 9 Pathophysiology * 9.1 Indian childhood cirrhosis * 9.2 Wilson ’s disease * 9.3 Alzheimer’s disease * 10 Marine life * 11 Bacteria * 12 References | Toxicity
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Chemistry vacation Assignment Standard -X 1. Name a sodium compound which is used for softening hard water 2. Write the chemical name and formula of baking soda? 3. What will happen if the solution of sodium hydrogen carbonate is heated? Give the equations of the reaction involved? 4. Write the chemical name and the formula of bleaching powder. 5. Write the chemical formula of plaster of Paris? 6. What will happen if heating is not controlled while preparing
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IGCSE REVISION NOTES The basic economic problem: scarcity and exercise of choice . igcse economics - Scarce resources & unlimited wants This is the reason for the existence of this subject. In reality most resources are scarce. Similarly individuals and nations have unlimited wants. [pic] The Basics [pic] Scare Resources There are only a limited number of resources such as workers‚ machines‚ factories‚ raw materials etc. Yet there are a number of different ways in which they could
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Evelyn Ramos CHEM LAB 201-003 Professor Ruddock Experiment #4 - Chemical Reactions Performed: 3/6/13 DUE: 3/13/13 Pre Lab Questions: 1. Before you can write a chemical equation‚ what must you know? You have to know what the products and reactants are. 2. What observations might you make that suggest that a chemical reaction has occurred? If a gas is produced or precipitates are formed that indicates chemical reaction. Also‚ if color changes occur or
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Laboratory 6: Energy Changes in Chemical Reactions Note: Lab reports are to be completed by each student individually and in their own words Observations: (This part is to be completed in class) Part 1: Physical Change- Heat of Solution for Sodium hydroxide (NaOH) 3.2 grams NaOH Result: Temperature of DI water = ____22.8 °C Temperature after addition of NaOH = ______31.8 °C Part 2: Chemical Change- Reaction between acid and base Result: Temperature of HCl = ___21.4 °C Temperature after addition
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Education BIOLOGY Paper 1 Multiple Choice May/June 2004 45 minutes Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) 0610/01 READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Write your name‚ Centre number and candidate number on the answer sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions
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COMMUNICATION TECHNOLOGY Paper 2 Practical Test 9713/02 October/November 2010 2 hours 30 minutes Additional Materials: Candidate Source Files READ THESE INSTRUCTIONS FIRST Make sure that your Centre number‚ candidate number and name are written at the top of this page and are clearly visible on every printout‚ before it is sent to the printer. DO NOT WRITE IN ANY BARCODES. Carry out every instruction in each task. At the end of the exam put this Question Paper and all your printouts into
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*8621469522* COMBINED SCIENCE CO-ORDINATED SCIENCES Paper 6 Alternative to Practical 0653/06 0654/06 May/June 2009 1 hour 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. You may use a soft pencil for any diagrams‚ graphs‚ tables or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. DO NOT
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