Experiments with Metals and Ions of Metals Introduction Metals are similar in their physical properties in general‚ but they are not identical. Most of the metals are solids; few of them are liquids‚ such as mercury and cesium. Density of metals is not similar also. For example‚ sodium has density of 0.97g/cm3 while lead has density of 11.4g/cm3. Melting point of sodium is 98.0oC while for lead it is 327.6oC. Metals have the capability to lose electrons when they react with non-metals such as
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Heavy Metal Music Good morning to our lecturer and my fellow friends. Today‚ I’m going to inform you about my favourite music genre‚ the heavy metal or metal. I’ll talk about its origin‚ characteristics and its evolvement. I am pretty sure that all of you are not fans of heavy metal. Perhaps‚ some of you did not even heard of it. Heavy metal ‚ often referred to as metal ‚ is a genre of rock music that developed in the late 1960s and early 1970s with roots in blues rock and psychedelic rock. Heavy
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TOPIC 2 Metals The History of Metals * Uses of metals through history: * Copper Age (3200-2300 BCE) – copper and tin were most common metals‚ and were used for ornaments‚ weapons and tools. * Bronze Age (2300-700 BCE) – copper‚ tin and bronze were used for tools‚ weapons and transport. They produced bronze by heating copper and tin with charcoal. * Iron Age (1000 BCE – 1 CE) – iron steel and lead was used for tools‚ weapons and pipes. Iron is much harder than bronze.
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26 2.3 Metal Forming Valery Marinov‚ Manufacturing Technology SHEET METALWORKING Classification of Sheet Metalworking Processes Basic sheet metalworking operations: (a) bending‚ (b) drawing‚ and (c) shearing; (1) as punch first contacts sheet and (2) after cutting. Force and relative motion are indicated by F and v Cutting Operations Shearing Shearing is a sheet metal cutting operation along a straight line between two cut-ting edges by means of a power shear. Shearing
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Extrusion is the process by which a block/billet of metal is reduced in cross section by forcing it to flow through a die orifice under high pressure. • In general‚ extrusion is used to produce cylindrical bars or hollow tubes or for the starting stock for drawn rod‚ cold extrusion or forged products. • Most metals are hot extruded due to large amount of forces required in extrusion. Complex shape can be extruded from the more readily extrudable metals such as aluminium. * The products obtained are also
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How does Robert gray enable the reader to shape the speakers discovery and it’s concequences in “Flames and Dangling wire”?. The impact of a discovery can be far reaching and transformative for an individual and a broader society. As conveyed in Robert Gray’s poem‚ “Flames and Dangling Wire”‚ the audience is invited to discover both the grim experiences at a rubbish dump and in turn uncover the frightful vision of carelessness and environmental degradation in our world. From stanza one‚ we as an
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Case Study Finance - EDHEC MBAUnited Metal | | Background We refer to the case in the finance textbook for the details. Throughout our efforts in determining the right decision for United Metal‚ our team decided to calculate the difference between the ‘Make’ or ‘Buy’ options‚ using the numbers given in the case. However‚ in order to determine the net present value (NPV) and make appropriate recommendations‚ a risk adjusted discount rate (rate-of-return or ‘r’) needs to be incorporated.
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Chemistry Practical: Activity Series of Metals Introduction: The chemical activity of a metal is directly related to its practical use. In this investigation you will investigate the chemical activity of metals with oxygen‚ water‚ acid and alkali‚ to rank metals in order of their activity. Aim: To observe the reactivity of metals in order to determine the activity series of metals. Risk Assessment: In this investigation‚ hydrochloric acid solution is used which is toxic by all routes of
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GOFFMAN‚ SCHEFF AND SCASZ ARGUE THAT MENTAL ILLNESS IS A SOCIAL CONSTRCUTION. Mental illness is a general term referring to psychological‚ emotional‚ or behavioural disorders as well to the view that these disorders are diseases of the mind. Because it’s more to do with the psychological aspect‚ methods of treatment are different from a physical disability. A physical disability may involve treatment like acupuncture and traditional medicine whilst a mental illness (disability) treatment involves
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Colored Flame 2 Part 3: A Simple Experiment‚ Green Flames 5 The Materials 5 The Method 5 A Higher Explanation 5 Part 4: Multicolored Fire 6 The Materials 6 The Method 6 Part 5: Uses Of Colored Fire 7 Part 6: Effects Of Colored Fire 7 part 7: Bibliography 8 Part 1: Abstract Fire is an important source of light and energy. It usually has the color of red‚ orange‚ yellow and white. What about other colors? Is it possible to have a fire with a green flame or a violet
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