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Name of the material The material I will be writing about is glass Soda-Lime-Glass will be the main type of glass I will explain in detail even though there are five other main types of glass including Lead-alkali glass borosilicate glass alumino-silicate silica glass and fused silica glass How the material is made Glass is composed from four main compounds Silica SiO2 Sodium carbonate Na2CO3 limestone CaCO3 magnesium carbonate MgCO3 Additives may be added to improve the quality and colour of glass The compounds are all than crushed together and heated to a temperature of 1500oC for long periods of time than the mixture is than quickly cooled down Chemical equations Na2CO3SiO2---1500oC61664 Na2 SiO3 CO2 Na2 SiO3 SiO2---Na2SO4 Digestion61664 Na2O SiO2 Uses for the material There are numerous uses for glass the main uses of soda-lime-glass is bottles and windows but other types of glass can also be used to make for example jars medical equipment optical fibres computer monitors electronic circuits drinking glasses bowls light bulbs mirrors flasks test tubes lenses eye glasses and magnifier glass Properties - Is strong but will shatter if too much tension is applied - Insoluble in water - Highly resistant to most chemicals - Water corrosion is slow at low temperatures - A good thermal conductor - Does not conduct electricity - Light can bounce off glass be absorbed and go through the glass - Glass does not transmit ultra-violet radiation - Glass transmits infrared radiation Glass Colouring CompoundGlass Colour Antimony SulphideRed Antimony oxidesWhite Cadmium sulphideYellow Carbon and sulphurAmber brown CeriumYellow Cobalt oxideDeep blue GoldRed Copper compoundsLight blue red IronGreen and Aqua Iron and sulphurAmber Lead with antimony Yellow Manganese oxideDecolouriser dark blue deep amber Mix of manganese cobalt and ironBlack NeodymiumPurple PraseodymiumGreen SeleniumRed Tin compoundsWhite Uranium oxidesA glowing yellow green
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