Biology Revision summer 2012 1-Characteristics of living organisms Nutrition- taking in of nutrients which are organic substances and mineral ions ‚ containing raw materials or energy for growth and tissue repair ‚ absorbing and assimilating them . Excretion- the removal from organisms of toxic material‚ the waste products of metabolism and substances in excess of requirement . Respiration- the chemical reactions that break down the Sensitivity- The ability to detect or sense changes in the
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Paper Airplanes Project Design Plan: * I want to know what type of paper airplane model will fly the farthest. I believe airplane design is very important when trying to see how far a paper airplane will fly. The different shape and narrowness or width as well as weight distribution are all factors in flight distance. So if I have a narrow paper airplane‚ a very wide one‚ and one in between‚ which on will fly the farthest? * The relevance of this experiment is similar to understanding
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Chromatography Abstract Paper chromatography is one of the methods under chromatography‚ it can use in identifying unknown compounds using known compound and it can also use as a separation technique based on the differences in affinities of components of the mixture to a stationary phase and a mobile phase. In the experiment‚ the stationary phase was the filter paper onto which the dye samples were dropped onto while the mobile phase was the solvent mixture containing ethanol and water which
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- EDUCATIONAL PURPOSES ONLY - NOT FOR SALE - Mark Scheme November 2007 IGCSE IGCSE Accounting (4305) Edexcel Limited. Registered in England and Wales No. 4496750 Registered Office: One90 High Holborn‚ London WC1V 7BH - EDUCATIONAL PURPOSES ONLY - NOT FOR SALE Edexcel is one of the leading examining and awarding bodies in the UK and throughout the world. We provide a wide range of qualifications including academic‚ vocational‚ occupational and specific programmes for employers. Through a network
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Ordinary Level ENGLISH LANGUAGE 1123/12 May/June 2014 Paper 1 Writing 1 hour 30 minutes No Additional Materials are required. * 7 9 8 5 3 1 3 0 4 5 * READ THESE INSTRUCTIONS FIRST An answer booklet is provided inside this question paper. You should follow the instructions on the front cover of the answer booklet. If you need additional answer paper ask the invigilator for a continuation booklet. NB: Remember that Section 1 and Section 2 of this paper are worth the same number of marks‚ so you should
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Analysis of Food Colorings by Paper Chromatography Introduction Paper Chromatography one method for testing the purity of compounds and identifying substances. This is a useful technique because it is relatively quick and requires small quantities of material. Separations in paper chromatography involve the same principles as those in thin layer chromatography. The substances are distributed between a stationary phase and a mobile phase. The stationary phase is usually
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The Federalist Papers A Penn State Electronic Classics Series Publication The Federalist Papers is a publication of the Pennsylvania State University. This Portable Document file is furnished free and without any charge of any kind. Any person using this document file‚ for any purpose‚ and in any way does so at his or her own risk. Neither the Pennsylvania State University nor Jim Manis‚ Faculty Editor‚ nor anyone associated with the Pennsylvania State University assumes any responsibility for
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Pentagon Papers; The Truth to War On June 31‚ 1971‚ President Nixon picked up a copy of his New York Times newspaper and found the 1st story on the Pentagon Papers. The Pentagon Papers was a hidden government document that had information on the Vietnam War. It was also a government study in Southeast Asia. Daniel Ellsberg knew that the government was hiding something. Daniel Ellsberg was a political activist. He was the one who leaked the information to the New York Times. Daniel Ellsberg
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Business Plan: Paper Recycle & Reuse 1. Introduction a. The name of my business is “All Papers”. b. The business is about recycle and reuse paper 2. Business Description a. The company will collect the second hand paper‚ cardboard box and textbooks then turns into pencil‚ gift box and white papers. b. Paper is one of the most common daily use‚ recycle paper will have a low cost to get the processed materials and low risk. c. The main goal for this business is
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Recrystallization Estopace‚ Edgie1‚ Polintan‚ Clarisse K. Professor Edgie Estopace‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology; Clarisse Polintan‚ CHM145L/A21‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology ABSTRACT This experiment is all about identifying the appropriate solvent for recrystallization and technique and to use the recrystallization technique in purifying a solid sample. Most organic
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