← Understand the manufacture of sulphuric acid. ← Synthesise the manufacture of ammonia and its salts. ← Understand alloys. ← Evaluate the uses of synthetic polymer. ← Apply the uses of glass and ceramics. ← Evaluate the uses of composite materials. ← Appreciate various synthetic industrial materiala. (H4SO4) ← USES OF SULPHURIC ACID 1. Sulphuric acid is used to produce chemical fertilizer such as ammonium sulphate and potassium sulphate‚ which are highly soluble in water
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. SUMMARY OF PROPOSAL Welding is a process used to join metal parts by producing a coalescence‚ called a weld‚ at a joint. Advances in welding technology have opened the way for innovative designs in structures and machinery. Of modern welding processes‚ the greatest number fall under the general classifications of arc welding‚ gas welding and cutting‚ resistance welding‚ and brazing. Tungsten Inert Gas (TIG) welding is one of the arc welding methods. This method is suitable for many kinds
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1817 - German baron Carl Von Drais develops the ‘draisienne walking machine’‚ commonly known as a ‘hobby horse’ or ‘dandy horse’. It was the first bicycle to feature steering and it comprised a wooden frame and wheels (rimmed with wrought iron) and wrought iron forks. 1839 - Scottish blacksmith Kirkpatrick Macmillan was the first person to give the bicycle pedal power. He added treadles to the rear wheel of his hobby horse. They were operated by rods connected to cranks and foot stirrups. It was
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We all know Iron Man as the man in the red armor‚ yet we cease to know exactly what made the suit capable of it’s abilities. Nanotechnology is the prime reason behind Iron Man’s abilities in both the comic and movies. His suit actually contained little iron‚ in fact‚ the suit was “heavy‚ dense and prone to rust” (16). Thanks to Nanotechnology the suit was altered into something that would weigh less‚ be easier to maneuver in and prevent him from being injured during combat. As stated by Lynne Robinson
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of water by looking for the chemicals free chlorine‚ chloride‚ sulfate‚ nitrate‚ copper‚ total hardness‚ iron‚ hydrogen sulfide‚ lead‚ pesticides‚ pH‚ total alkalinity‚ and total chlorine inside a water sample. The chemicals that produced a 0.0 result meant that there was no trace of that chemical inside the sample. The chemicals not found were copper‚ hydrogen sulfide‚ free chlorine‚ lead‚ iron‚ pesticide‚ and total chlorine. As a class we found the results of the other chemicals that were present
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(Q.)Give one example of each: metals and non-metals. (Ans) Metals: Copper. Non-Metals: Sulphur. (Q.)Name the metal‚ which is the best conductor of heat and electricity. (Ans) Copper. (Q.)Name the property by virtue of which metals can be drawn into thin wires. (Ans) Ductility. Q.)Name the gas produced‚ when metals reacts with acids. (Ans) Hydrogen gas. (Q.)What is the color of the copper sulphate solution? (1 Mark) (Ans) Blue. (Q.)State the nature of oxides
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engine blocks include Grey Cast Iron‚ aluminum and Compacted Graphite Iron (CGI). In the early years of building engine blocks‚ grey cast iron was the only material used. The process of using alloys was non-existent and aluminum was a new material which few people were familiar with. At the time‚ however‚ grey cast iron worked very well. The carbon‚ present as flakes of graphite‚ in grey cast iron gives the material good resistance to wear and also provides good corrosion resistance and lubrication
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metals? | Science 2012 | Could electrolysis be used to determine the comparative reactivity of metals? | Contents COULD ELECTROLYSIS BE USED TO DETERMINE THE COMPARATIVE REACTIVITY OF METALS? 2 BACKGROUND 2 Electrolytic and Galvanic corrosion: 3 AIM 5 HYPOTHESIS 6 VARIABLES 6 APPARTATUS 7 DIAGRAM 8 METHOD / PROCEDURE 8 RESULTS 11 Tables 11 Graphing 13 DISCUSSION 14 Graph 1 / 2(Volume of Hydrogen Produced): 14 CONCLUSION 16 EVALUATION 17 Strengths 17 Weaknesses
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early atmosphere - earth roughly 4 billion yrs old - created by volcanoes erupting + releasing gases - contained mostly co2 + water vapour - earth cooled + water vapour condensed to form oceans - co2 dissolved into oceans + used to form marine organism shells which were compacted to form sedimentary rock - plants evolved to photosynthesise‚ takingin co2 + releasing oxygen - scientists don’t kno where all nitrogen came from bc they weren’t there to record evidence but most theories suggest
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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 a hammer (Fig. 4.1)
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