A Level Science Applications Support Booklet: Chemistry A Level Science Applications Support Booklet: Chemistry Contents INTRODUCTION....................................................................................................................................1 1 – THE CHEMISTRY OF LIFE .............................................................................................................2 1.1 – Introduction ........................................................................
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N09/4/CHEMI/HPM/ENG/TZ0/XX+ 88096101 CHEMISTRY HIgHER lEvEl PaPER 1 Tuesday 3 November 2009 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper. 8809-6101 16 pages © International Baccalaureate
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Blue No. 1‚ Yellow No. 5 contain carbon rings and NaSO3. Additionally‚ Red No. 40 and Yellow No. 5 are very similar‚ as they both contain one nitrogen double bond‚ a hydroxyl group‚ and no ions. Blue No.1 contains nitrogen and chlorine ions and N(C2H5)CH2. 2. In the Introductory Activity‚ the developing solvents were 2% sodium chloride aqueous solution and 2% isopropyl alcohol aqueous solution. Draw separate molecular diagrams of how sodium chloride and isopropyl alcohol would interact in water. Identify
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• Maximize choice • Maximize life quality Marketing Challenges (in 1990s) • Rapid globalization • Changing world economy • Call for ethics and social responsibility • New marketing landscape Summary Ch2 Marketing and Society Impact on individual customers • High prices • High cost of distribution • High advertising and promotion costs • Excessive mark-ups • Deceptive practices • High pressure selling
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Biology 113 Review sheet Chapter 2: * What is a compound and how is it different than an element? Compound is more than one element. An element cannot be broken down by chem. Rxns. * What are the 4 main elements of life? Why? C‚H‚O‚N they make up 96% of living matter and they are found in all of the major macromolecules * Be able to calculate the number of protons‚ neutrons and electrons given an element’s mass number or atomic number. If given this symbol - 4He – can you tell
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Given the unknown colourless liquid it is essential that the structure is derived. Firstly it is important to determine the percentage composition of elements to work out the empirical formula. The empirical formula was found to be C10H12O and the mass of the unknown was 148.09 m/z which when calculating the molecular weight of the empirical formula it did equal 148.09 g mol -1. This means that the empirical formula is also the molecular formula. As 12.01x10 carbons +1.008x12 hydrogens + 16= 148
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This process requires PSI‚ PSII‚ cytochrome bf‚ ferredoxin-NADP+ reductase and chloroplast ATP synthase. I. Photosystem II Photosystem II transfers electrons from water to plastoquinone and in the process generates a pH gradient. O H3 C H3 C CH3 C H2 O C H CH3 C C H2 H n = 6-10 2e- + 2H+ Plastoquinone Plastoquinone (PQ) carries the electrons from PSII to the cytochrome bf complex. Plastoquinone is an analog of Coenzyme Q. The only differences are the methyl groups replacing the methoxy groups of
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CHAPTER 1 GUIDE FOR THE PREPARATION OF WRITTEN REPORTS Jayashree Arcot (2014) 1.1 INTRODUCTION These notes have been prepared to aid you in presenting concise‚ literate and well-organised reports in second year. In third year you will find that the Department ’s requirements are very strict and designed to prepare you for your professional career. However‚ in second year‚ the main emphasis will be on the mechanical details of the report and on developing ability to present ideas and interpretations
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the reaction below). One measure of the degree of unsaturation of fats and oils used by food chemists is known as the iodine number‚ where iodine is used in place of bromine for this reaction. H3C(CH2)16COOH + Br2 No Reaction H H H H H3C(CH2)7 C C (CH2)7COOH + H3C(CH2)7 C C (CH2)7COOH Br2 Br Br Phospholipids‚ such as lecithin‚ have a polar or charged portion and a nonpolar portion consisting of the long chain fatty acids within the same molecule. Consequently the polar
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Mass Spectrometry MS Interpretation General Interpretation Strategies i Wherever you see this symbol‚ it is important to access the on-line course as there is interactive material that cannot be fully shown in this reference manual. Aims and Objectives Aims and Objectives Aims • Introduces students to the principles of mass spectral interpretation. • Present fundamental concepts regarding mass spectral interpretation Objectives At the end of this Section you should be able to: •
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