number and type of atoms present. Non-metal compounds are made of molecules: Carbon dioxide contains CO2 molecules Methane (natural gas) contains CH4 molecules AN ION is an atom or group of atoms with an electrical charge (+ or -). Metal compounds such as sodium chloride or copper sulphate contain ions. Sodium chloride is made of Na+ and Cl- ions Copper Sulphate is made of Cu2+ and SO42- ions Note that metals form positive ions while non-metals form negative ions. A solid is represented
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Chapter 14 Review The environmental effects of gold mining can harm the environment in many negative ways. Gold miners removed enough rock to equal the weight of 50 automobiles to extract a little amount of gold. The leftover waste is piled near the mine sites and can pollute the air and nearby surface water. Mining companies also created a new mining technology called cyanide heap leaching to level entire mountains of rock. In order for them to extract the gold, they spray a solution of highly
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It is located in Bluff and it contributes with half a billion dollars to the Southland economy representing 13.5% of its GDP Worldwide the aluminium industry is facing challenging times. Aluminium is a commodity and its price is set by the London Metal Exchange. NZAS produces around 350000 tonnes per year. The declining price and increasing cost of energy is hindering the ability of NZAS to make a profit. From a broad perspective this is the reason why the company has made a loss in the last two
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: 980C BOILING POINT : 8830C Sp. Gr : 0.927 APPEARANCE : Soft, waxy, silvery reactive metal. It is highly reactive, burns with a yellow flame, reacts violently with water and oxidizes in air necessitating storage in an inert environment. APPLICATIONS Sodium in its metallic form is an essential component in the making of esters and in the manufacture of organic compound. This alkali metal is also a component of Sodium chloride (NaCl) which is vital to life. Other uses: • In certain
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handblown glassware in the form of tumblers, paperweights, patterned glasses and vases. In a refurbished garage, James fashioned handblown items from molten glass gathered on a long metal blowpipe. Using his own breath to shape the object, James formed each vessel by a process analogous to blowing honey at the end of a straw. Once the bottom was formed, a metal punty was attached, and the vessel was broken from the pipe. After reheating, the lip was trimmed, fire polished and formed. When the object was
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Blown Glass: History and Techniques As an art form, glassblowing has been around since the 1st century B.C., and has a very complex and detailed history. From ancient and natural occurring volcanic glass to the beautiful and intricate art of today, glassblowing, and glass itself, have had a long and arduous path. To better understand glassblowing, it is essential to understand the development of glass, its history, and how the techniques used by artists have evolved throughout history. Man-made
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The history and evolution of materials used to make automotive engine blocks The engine is an essential part of an automobile that provides tractive force to drive the entire vehicle. Most of the current engines are the integral section of a vehicle which is built in different arrangements and more complex as compared to the early engines. The common parts present in an engine include camshaft, rocker arms, pistons, crankshaft, flywheel, both oil and fuel pumps and other various components. The
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Contents P3.1 1 Analyse the functions of a product, e g forces acting on any four engine component, and what kind of material constraints should be taken into account based on various loading factors at its design phase. 1 Camshaft 1 push rod 2 valves springs 3 Piston 3 P3.2 5 Identify the function of the piston, connecting rod , crankshaft and fly wheel. list down and explain the materials and their properties the components which they are made with, along with the processing methods to make these
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My Journey to America HIS/120 Ruth Todd I had long feared that our time in in Ukraine had come to an end. Alexander III had placed unjust restrictions on my people because of our Jewish faith. Segregation and being forbidden to buy property outside of our jurisdiction forced us to live in congested cities and ghettos. Russian rule over the province of Kiev , and much of eastern Ukraine, had gotten the best of us. The war with Russia, rioting and unrest that these harsh economic times have
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Earth’s lithosphere consists if crust and the upper mantle. THE STRUCTURE Earth has a diameter of about 12,756 km (7,972 mi). The Earth's interior consists of rock and metal. It is made up of four main layers: 1) the inner core: a solid metal core made up of nickel and iron (2440 km diameter) 2) the outer core: a liquid molten core of nickel and iron 3) the mantle: dense and mostly solid silicate rock 4) the crust: thin silicate rock material Earth's Crust: There are two different types
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