UNIT 5 – ELECTROCHEMISTRY Chapter 9 – Electric Cells 9.1 – Oxidation and Reduction * The term reduction came to be associated with producing metals from their compounds. * Ex. Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2 * Another substance‚ called a reducing agent causes or promotes the reduction of a metal compound to an elemental metal. In this example‚ it is CO. * Corrosion‚ including the rusting of metals‚ is now understood
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The Chemistry of Life 3.1 Chemical Elements and Water 3.1.1 State that the most frequently occurring chemical elements in living things are carbon‚ hydrogen‚ oxygen and nitrogen. Carbon‚ hydrogen‚ oxygen and nitrogen are the most frequently occurring chemical elements in living things. 3.1.2 State that a variety of other elements are needed by living organisms‚ including sulphur‚ calcium‚ phosphorus‚ iron and sodium. Other elements are needed by living organisms including sulphur‚ calcium
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Write your name here Yasitha Surname Other names De Silva Centre Number Candidate Number 0014 Edexcel GCE Biology Advanced Subsidiary Unit 1: Lifestyle‚ Transport‚ Genes and Health Monday 1 June 2009 – Afternoon Time: 1 hour 15 minutes You do not need any other materials. Paper Reference 6BI01/01 Total Marks Instructions black ink or • Usein the boxesball-point pen. page with your name‚ at the top of this • Fill number and candidate
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IMPORTANT TOPICS OF CHEMISTRY 2009 Chap No.1 Q.1- Define chemistry & branches of chemistry any three? Q.2-Lrean about history of chemistry for short question and fill in the blanks? Q.3 what is scientific method? Define hypothesis and theory? CHAP NO.2 Q.1-Learns about any three laws of chemical combination only statement and example? Q.2-Define chemical reaction and types of chemical reaction with one example for each with the help of chemical equation? Q.3-Define MOLE‚ Atomic no
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Write your name here Surname Other names Pearson Edexcel Centre Number Candidate Number International Advanced Level Economics Unit 3: Business Economics and Economic Efficiency Friday 17 January 2014 – Morning Time: 1 hour 30 minutes You do not need any other materials. Paper Reference 6ECA3/01 Total Marks Instructions black ink or • Usein the boxesball-point pen. page with your name‚ at the top of this • Fill number and candidate number. centre in A and
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Write your name here Surname Other names Centre Number Candidate Number Edexcel GCE Business Studies/Economics and Business Advanced Unit 3: International Business Tuesday 15 January 2013 – Morning Time: 1 hour 30 minutes You do not need any other materials. Paper Reference 6BS03/01 6EB03/01 Total Marks Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name‚ centre number and candidate number. Answer all questions in Section
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Mr. Johnson Honors Biology Unit 3: Chemistry of Life Study Guide 1) What are the major components of an atom? Proton‚ Electron and Neutron 2) Which Subatomic particle is most important to biological systems? The most important subatomic particle to biological systems is 3) Be able to indentify various Chemicals bonds. 4) How does polarity of water make it an excellent solvent? The polarity of water is caused by the electro negativity of the oxygen atom‚ so electron density is
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Oxford College of London Edexcel BTEC Level 5 HND Diploma in Business Course handbook 130204 Course handbook: Edexcel BTEC Level 5 HND Diploma in Business INTRODUCTION This course handbook will provide you information about the qualification Edexcel BTEC Level 5 HND Diploma in Business. The handbook will provide detailed information about the learning outcomes and the assessment criteria which you need to achieve to attain this qualification. You are required to refer to this handbook
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com/mm/how-does-aging-process-affect-respiratory-system.html#ixzz2MroGmIv9 07/03/2013 Britain’s ageing population accessed on URL: http://www.21stcenturychallenges.org/focus/britains-greying-population / 26/03/2013 Stretch‚ B Whitehouse‚ B (2010) ‘health and social care level 3: book 1’ Essex. Pearson Educational Limited. Word count: 2‚458
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VIHS/ Department of Chemistry Chemistry Revision Unit II (Edexcel) (01) a) When lithium nitrate and sodium nitrate are heated separately‚ both decompose giving oxygen gas as one of the products. (i) Which of these two nitrates would decompose at the lower temperature? .........................................................………………………………………….................... (ii) Give the name of any other product formed when sodium nitrate is heated. .....................................................
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