Chemistry - Module 2 - Metal 1. Metals have been extracted and used for many thousands of years * Outline and examine some uses of different metals through history‚ including contemporary uses‚ as uncombined metals or as alloys. Contemporary Uses of common metals Metal | Uses | Iron and Steel (an alloy with <2% carbon)Good tensile strength‚ cheap‚ rusts (corrodes) | - Railways‚ bridges‚ buildings- motor cars bodies‚ ships and trains- Engine blocks‚ fire hydrants‚ drainage
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I believe that every one thinking about joining the military should definitely consider watching the film Platoon for multiple reasons. The first reason is that at the beginning of the movie Taylor walks by body bags and they say “is that what I think it is” that shows him how real of a situation he is in. A life or death situation. The movie also shows characters having major psychological problems when going through and after the war. The soldiers thought it was okay that they were going to rape
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Oxidation & Reduction I. Metal-Metal Ion Displacement II. Halogen Displacement Reactions INTRODUCTION A series of experiments had been conducted to determine the order of displacement strengths of the metals and halogen chosen for the experiments. A displacement reaction is a reaction in which one element(metal or non-metal) displaces another element(metal or non-metal) from its salt solution. In the displacement reaction of metals‚ the more electropositive metal will displace the less
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The Scholarship Jacket Racism is a well known problem throughout this world. We get judge every day whether its our race‚ the way we dress‚ the way we talk‚ how we do academically‚ and if were going to succeed in life based on others people way of thinking what success is. The following story that I read is an excellent example of the way people underestimate us just because of our race or where we stand in society. “The Scholarship Jacket” by Marta Salinas is about a young girl wanting to figure
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Rocio Rodriguez Platoon: The Film on the Vietnam War “Somebody once wrote: ‘Hell is the impossibility of reason.’ That’s what this place feels like. Hell” (Platoon). The controversial issues concerning Platoon were not on the film itself‚ but about how this film portrayed the war in Vietnam and the affects the war had on the soldiers morally‚ physically‚ mentally‚ and emotionally. Oliver Stone directed and wrote the screenplay‚ using his own experiences as a reference. Oliver Stone chose to
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Metals and Non-metals Elements are divided mainly into two groups on the basis of physical and chemical properties – Metal and Non-metal. Metals: Part - I Physical Properties of Metals:- Hardness:- Most of the metals are hard‚ except alkali metals‚ such as sodium‚ potassium‚ lithium‚ etc. Sodium‚ potassium‚ lithium etc. are very soft metals‚ these can be cut using knife. Strength:- Most of the metals are strong and have high tensile strength. Because of this big structures are made using metals
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Metals Physical Properties of Metals versus Non-metals Properties | Electrical conductivity | Heat conductivity | Melting and Boiling points | Malleability & ductility | Lustre | Metals | Good | Good | High | High | Shiny | Non-metals | Poor | Poor | Low | Low (Brittle) | Dull | Chemical Properties of Metals versus Non-Metals Properties | Metals | Non- metals | Reaction with oxygen | Form basic or amphoteric oxides | Form acidic or neutral oxides | Ionisation | Lose electrons
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extract a metal Industrial mineral- either has some direct practical use‚ or take part in some industrial process Gems and precious stones are an exception to industrial metals as they do have a direct ‘practical’ application but are dealt with separately. Some common minerals include: * * Silica- (silicon dioxide) most common mineral on earth * Calcite- (calcium carbonate) main mineral in limestone and marble Ore: A naturally occurring solid material from which a metal or valuable
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Metals & Non-Metals Metals: Good conductors of heat and electricity. Have shining luster. Malleable (this means that they can be hammered or distorted). Ductile (this means that they can be drawn into wires). Most have high melting and boiling points. Are sonorous (give out sound when beaten). Usually solid at room temperature. An exception to this is mercury‚ which is liquid in nature. Examples: Aluminum‚ Gold‚ Copper‚ Silver‚ Sodium‚ Potassium‚ Mercury. Corrode or oxidize in
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Chemistry Introduction Objective: The goal of the chemistry unit is to teach students how to identify when a chemical reaction has occurred. The students should be able to watch a process and determine if a chemical reaction has occurred. They will see (and usually perform) reactions demonstrating every type of chemical change. Background: Chemistry is the study of chemical reactions as a result of molecular interaction. There are four ways to determine if a chemical reaction has occurred
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