Laura Speirs June 13‚ 2011 Professor Nalley Tungsten Paper Tungsten Tungsten is a gray-white metallic element that is stable and is very resistant to acids and bases. It does‚ however‚ oxidize in air‚ especially at higher temperatures Tungsten was discovered by Juan José and Fausto Elhuyar‚ Spanish chemists and brothers‚ in 1783 in samples of the mineral wolframite ((Fe‚ Mn)WO4). Tungsten was named from the Swedish words "tung sten" meaning "heavy stone." Tungsten ’s chemical symbol comes from
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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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Topic: Silver is an ancient mineral that dates back since prehistoric times. One thing that makes silver so special is that it was one of the first five metals that we started to use. Silver is found in almost every electronic device there is‚ and as time progresses the usage of it increases‚ unfortunately the amount there is left decreases. How is it created or source of the mineral? (5) Silver is not originated from Earth‚ as it happens it came from space. Many elements were formed in the big
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MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
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Jackets & Coats Never out of fashion and always in style- Malaysia (Onsite Blog) There are a few things that are bound to dependably be in style. They are the staples of each jazzy lady’s closet‚ and they are genuine savers concerning "nothing to wear" issue. A coat isn’t only simple to-convey protection against chilly climate; its a style proclamation enveloping an immense assortment of styles and compositions. From athletic coats to fleece jackets and calfskin or softened fur coats to artificial
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Passion and Aggression: A Review of Heavy Metal Music Of the many musical genres that immerse themselves in our culture‚ you would be hard pressed to find one which exacts as much emotion from its listeners as Heavy Metal. Whether you are drawn in by the forceful barrage of sound that envelopes the listener or the fantastical lyrics that are commonly utilized‚ any avid listener will agree that this style of music stands for no substitute. In this brief article my intent
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INVISALIGN TEEN® Getting metal braces is probably at the very bottom of your list of things to do‚ with all the social activities‚ sports‚ school etc. that you have on your agenda. Now you don’t have to worry wearing metal braces anymore. Invisalign Teen® will straighten your teeth without the need for metal brackets and wires. Now you can still do all the things you enjoy doing without having to worry about your smile. ONLY YOU WILL KNOW The clear smooth plastic of the Invisalign Teen® aligners
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Ski Jacket Production Executive Summary The problem is to determine the optimal production level of the Egress new designed jacket given the uncertainty in the forecasted demand. As oppose to determining a single profit value in the deterministic approach‚ the probabilistic method will incorporate the uncertainty in estimated demand and provide insights of the range of profit outcomes and its associated risk (deviation from mean). The key issue is to understand impact of demand uncertainty and
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Consider Metal Roofing When You Renovate Your Home Renovating a home is exciting because you get to pick out all the features you like. One thing you’ll need to decide on is the type of roof the home will have. Before you go with a traditional asphalt shingle roof‚ you should consider your other options‚ such as a metal roof. Metal roofing has several advantages. Here’s why you may want a metal roof on your renovated home. Metal Protects Your Home Metal is fireproof so it adds protection to your
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Tips For Choosing The Color Of Your New Metal Roof Metal roofing has several advantages over other roofing materials. It lasts a long time and it needs very little maintenance. It also comes in many different colors‚ so you don’t have to settle for a white or green roof if you don’t want to. If you’re considering a metal roof‚ you may want to keep these tips in mind for selecting the best color. Consider Your Climate The color of your roof can help control the temperature inside your home and
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