artworks‚ and doesn’t make them in an ordinary manner. It shows us the abstract and unusual side to art. 3. What new media is being used in a new and innovative way? Oliver used a variety of materials‚ including paper‚ resin‚ tissue‚ fibreglass‚ hair‚ copper and aluminium. The ethereal impression and supple curves of her objects belie the inherent qualities of their materials and the intensive process of their production. Artworks: 1. Does this artwork create a connection with ideas or themes between
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Centre Number For Examiner’s Use Candidate Number Surname Other Names Examiner’s Initials Candidate Signature Question General Certificate of Secondary Education Higher Tier June 2013 Science A CH1HP H Unit Chemistry C1 Chemistry Unit Chemistry C1 Monday 10 June 2013 1.30 pm to 2.30 pm Mark 1 2 3 4 5 6 7 TOTAL For this paper you must have: a ruler the Chemistry Data Sheet (enclosed). You may use a calculator. Time allowed 1 hour Instructions Use black ink or black ball-point
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The purpose of this lab was to find out the reaction of iron nails and CuSO4‚ copper sulfate solution. Before starting the experiment‚ there were two possible outcomes of the reactions. CuSO4 + Fe → FeSO4 + Cu or 3CuSo4 + 2Fe → Fe2(SO4)3 + 3Cu. The ion chart showed that iron can only make two charges‚ +2 and +3. As the liquid evaporated‚ the weight changed because the liquid added to the nail’s weight. In a real world situation‚ scientists can use ratios to determine how much of a substance that
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The Influence of Hair Color on the Concentration Zinc and Copper in Boys’ Hair1 JOSÉ DOREA2 ANDSUELI ESSADO PEREIRA G. Nutrition Laboratory‚ Faculdade de Ciencias da Saude‚ Universidade de Brasilia‚ 70910 Brasilia DP‚ Brazil of ABSTRACT Head hair of 150 normal boys from Brazil ranging in age from 1 to 12 years was studied for the influence of color on concentrations of zinc and copper. Hair color was classified visually and also quantified by melanin concentra tion. Visual classification
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from the Bunsen burner supports the formation of the Cu2+ ion. Why was it important to perform this reaction in the fume hood? It is important because the chemicals produce a toxic gas. Is there any copper metal left after you have completed this step? If not‚ where is the copper? No‚ there is no copper left. It dissolved in the nitric acid solution. Did you initially observe the formation of a precipitate that re-dissolved when more aqueous ammonia was added? No‚ eventually the solution changed to
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Shingala Dr. Campagnolo Chemistry H September 24‚ 2013 Lab on Density of Four Metals Conclusion In this lab we studied the densities of four different metals using a caliper‚ a digital scale‚ and a calculator. Three metals were pure elements like copper‚ iron‚ and aluminum. The fourth metal was an alloy which was brass. The purposes of this lab were to demonstrate that different metal elements have different densities‚ and that alloys have densities somewhere between those elements that compose them
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Progress in Organic Coatings 50 (2004) 75–104 Review Antifouling technology—past‚ present and future steps towards efficient and environmentally friendly antifouling coatings Diego Meseguer Yebra‚ Søren Kiil∗ ‚ Kim Dam-Johansen Department of Chemical Engineering‚ Technical University of Denmark‚ Building 229‚ DK-2800 Kgs. Lyngby‚ Denmark Received 28 January 2003; accepted 15 June 2003 Abstract The imminent ban of environmentally harmful tributyltin (TBT)-based paint products has been the
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door frames‚ paneling)- Aeroplanes- Motor car parts (cylinder heads‚ radiator cores)- High voltage transmission lines- Domestic pots and pans and wrapping foil- Drink containers- Electric wiring over long distances (long distance power lines) | Copper | - Electrical wiring (household and street cables)- Pipes and plumbing fittings - Electroplating‚ jewellery and household decorations | Zinc | - Galvanizing iron (surface coating)- Protective paints and electroplating- Diecast alloys (car carburetors)
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Have you ever wondered what drove modern humans to abandon bronze for iron? In this paper I will present the reasons for and the techniques used to develop iron into a useable metal that is far superior to bronze. Topics will include‚ when iron was first used‚ the accidental discovery of steel‚ and why bronze was replaced by iron. First though‚ let us look at the origins of iron. The Iron Age began around 1200 BC‚ according to Scarre‚ in southwest Asia (2005:434). It is know however that iron
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project value addition done by financial manager. • Southport Indonesia (SI)‚ a wholly-owned subsidiary of Southport Minerals‚ entrusted with a responsibility of mining the copper ore at Firstburg‚ Indonesia. o Initial experiments established that Firstburg mine contained 33 million tons of copper ore with an average copper content of 2.5%. o Bechtel conducted the cost and feasibility studies and informed that the total development cost would be $120mil and could be operationalized by end of 1972
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