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Perhaps more than all others, the 13th element on the periodic table is one of utter contrasts. Although once highly valued as a "precious metal," the price of a kilogram of this element today is considerably less than one's morning cup of gourmet coffee; alloys of this element are often dense and durable, yet the pure element is a light and soft metal; although this element is reasonably reactive, it is also readily passivated, rendering it essentially rustproof. Name: From Latin alumen,alum. Atomic mass: 26.98. History: Discovered in 1825 by Danish chemist Hans Christian Oersted. Occurrence: Aluminum is the most abundant metal in Earth's crust, but it is not found free in nature. Today, nearly all of the world's aluminum is obtained by isolation from aluminum oxide derived from bauxite ore. Appearance: Silvery white, lightweight metal. Behavior: Soft, nonmagnetic, and nonsparking. Pure aluminum is easily formed, machined, and cast, and it can be alloyed with a variety of metals. It is also a good conductor of electricity and an excellent reflector of radiation. The metal is generally nontoxic but can be harmful when ingested. Uses: Used to make cans, kegs, wrapping foil, and household utensils. It has numerous applications in the vehicle, aircraft, and construction industries. Discovered : 1825 by Hans Oersted Isolated in Copenhagen, Denmark Origin : From 'alumen', the Latin for the mineral alum. Description : The most abundant of metals. A lot of energy is needed to extract it from its ores : however, this is worthwhile because it does not rust and is easy to recycle. It is lightweight but tough and is widely used for window frames, aircraft parts, engines, kegs, cooking oil, drinks cans, etc. Foods with above average amounts of aluminium are tea, processed cheese, lentils and sponge cakes (where it comes from the rising agent). Cooking in aluminium pans does not greatly increase the amount in our diet except when cooking acid foods such as rhubarb. Some indigestion tablets are pure aluminium hydroxid. Discovering the Elements Webquest Element Name: Aluminum Atomic Number: 13 Element Symbol: Al Atomic weight: 26.981538 Picture of your element (as an element) Picture of the element (as it is commonly used) Description of the Element Physical Properties: State of matter at room temperature: Solid Melting point temperature: 1220.58 °F Boiling point temperature: 4566 °F Density: 2.70 g/cm³ Color: Silvery Texture: Smooth Hardness: Medium Malleability: Medium Ductility: Conductivity: 61.00 Chemical Properties: Flammability: its not Photosensitivity Combustibility Toxicity Discovery of the Element Who discovered the element? Where was it discovered? What are the uses of the element? When was it discovered? What are a few of the common uses or the historical uses of this element? List the way(s) in which the element appears naturally. is it mined or extracted from the ground? How What are the main compounds formed by this element and the industrial uses of these compounds? What are the main environmental concerns about this element? Are its compounds causing pollution? Five fun Facts Please list five fun facts you have learned about your element during the course of this webquest. Your name: Josh Snyder Your class period: Period 2