"Metal" Essays and Research Papers

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Metal

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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Metal Fabrication

 Metal fabrication is the building of metal structures by cutting, bending, and assembling processes: Cutting is done by sawing, shearing, or chiseling (all with manual and powered variants); torching with hand-held torches (such as oxy-fuel torches or plasma torches); and via numerical control (CNC) cutters (using a laser, mill bits, torch, or water jet). Bending is done by hammering (manual or powered) or via press brakes and similar tools. Modern metal fabricators utilize press brakes to either...

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Densities of Metal

Tony Nguyen Honors Chemistry Period 7 9/17/13 The Density of Metals Lab BACKROUND: Density is a constant relationship between the mass and volume of a specific type of matter. Measurements of both mass and volume can be obtained for a metal sample. The relationship can be shown graphically by plotting the volume of a sample on the horizontal x-axis and the mass of the sample along the vertical y-axis. Plotting the values for several samples, a linear relationship can be seen for a density (slope=density)...

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Density of Metals

Density of Metals Problem: How does the mass and volume help determine the density of known metal samples? Hypothesis: When comparing the density of Zn(zinc) and Cu(copper), you will find that Copper is more dense than Zinc. You can test this out by using the density formula D=m/v. Materials: * 2 metals (options: zn, al, or cu) * 3 samples of each metal (small, medium, and large) * Scale/Balance * Calculator * Water * Graduated Cylinder Safety: * Be prepared for your...

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Chemical Properties of Metals, Non-Metal

Chemical Prperties of Metals Most metals are chemically reactive, reacting with oxygen in the air to form oxides over changing timescales (for example iron rusts over years and potassium burns in seconds). The alkali metals react quickest followed by the alkaline earth metals, found in the leftmost two groups of the periodic table. Examples: 4Na + O2 → 2Na2O (sodium oxide) 2Ca + O2 → 2CaO (calcium oxide) 4Al + 3O2 → 2Al2O3 (aluminium oxide) The transition metals take much longer to...

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Corrosion of Metals

Corrosion of Metals Introduction Have you ever had a bike that went rusty, figure 1? If the paint is scratched and the rust allowed to spread, it is very difficult to repair the frame so it looks as good as new again. Rusting costs us millions of pounds each year, either through replacing things or through trying to prevent it happening in the first place. Figure 1: Bike rusting. In this booklet you learn about rusting and ways of stopping it, followed by a look at another metal, aluminium that...

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Metal Lab

was the temperature change for the metal sample (ΔTmetal)? Assume the intial temperature of the metal was the same as the temperature of the water it was boiled in. 70°C 3. What was the specific heat of water in J/g°C? 4.186 J/g°C 4. Using the following equation, your answers to questions 1-3, and your data table, determine the specific heat of the metal sample you tested. 5. Identify you metal using the list of specific heat values provided. The metal that was identified was Zinc. ...

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Strengthening of Metals

STRENGTHENING OF METALS There are 4 major ways to strengthen metals, and all work because they make dislocation motion more difficult. They also reduce the ductility: 1) Cold work (Strain Hardening) 2) Reduce grain size (Strengthening by Grain Size Reduction) 3) Add other elements in solid solution (Solid Solution Strengthening) 4) Add second phase particles (Precipitation or Age Hardening) • These mechanisms may be combined. • For example, the world’s strongest structural material (with...

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Abundance And Extraction Of MEtals

Abundance and Extraction of Metals 1.   a Mineral - A mineral is a naturally occurring inorganic solid, with a definite chemical composition, and an ordered atomic arrangement. b Ore - Deposit in the Earth of valuable metals contained in minerals. c Economic Natural Resource Deposit - This is a natural deposit of something that is economically viable to mine, refine and sell. Hence the deposit must be big enough to last for a large period of time, so that it will make enough money for...

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Density of Metals Lab

Density of Metals Lab 1. Purpose The purpose of this lab was answered in 4 questions, and their answers are here shown. The density of the metals we used were 5g/cm3. The density of a metal piece does not depend on its size, it depends on the total mass and total volume. The most accurate way of determining density is dividing mass by volume. You can’t identify metals by their density. It can help you narrow the options down, but you can’t identify a metal by using only its density. 2. Question ...

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