Corrosion Let metal sit surrounded by oxygen for a while and the metal will corrode. Corrosion is the chemical reaction that takes place when a metal is in contact with oxygen. The metal reacts with the oxygen to form a compound called an oxide on the surface of the metal. The metal becomes tarnished and loses its shine. Metals high in the reactivity series (an observable series of metals‚ in order of reactivity from highest to lowest) corrode more quickly than less reactive metals
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Potatoes May Power The Batteries Of The Future Friday‚ June 18‚ 2010 - by Ray Willington Oh‚ batteries. Can’t live with ’em‚ can’t live without ’em. It sounds like a power ballad‚ but it’s the story of our lives around here. We’ve been dealing with lofty promises and batteries that kick the bucket far too early‚ for years now. And the fact that we’re still dealing with lead-acid batteries is sort of a baffling thing to wrap one’s mind around. But all of that just might be changing. We won’t get
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through observations‚ the identity of substances produced in a chemical reaction. Materials: Safety Goggles Stirring rod Magnesium ribbon Solid CuSO4•H2O Matches Test tubes Copper metal 3M HCl Red and blue litmus strips 0.1M AgNO3 Zinc metal 0.1M Pb(NO3)2 Test tube holder 0.1M KI Bunsen burner 0.1M Na2NO3 Crucible tongs 1.0M NaOH Water (H2O) 0.1M Ca(NO3)2 50mL beaker 1.0 CuSO4 Procedure: Using the crucible tongs‚ take a magnesium strip and hold it in hot spot
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out of the 9 tests produced results that were inconclusive and therefore three cations were identifiable. When a white precipitate forms as more sodium hydroxide was added to the unknown substance the possible cations include: Aluminium‚ Lead (II) or Zinc. Furthermore if a white precipitate forms that does not dissolve as more ammonia solution is added it could mean the cation could be Aluminium‚ Lead (II) or Magnesium. This therefore means that further tests would need to be carried out in order to
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which belongs to our list of the top 10 super foods that make your hair grow is oyster. Oysters are known as aphrodisiac but they also help in the promotion of a healthy hair growth. Oysters are rich in zinc which aids hair growth and make sure that the oil glands in the scalp function correctly. Zinc is also a powerful antioxidant which does not only help your hair but your skin and your entire body as well. 8. Oats. If you are not fond of eating a bowl of oatmeal during breakfast‚ now might be a good
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enzymes work together to make us look beautiful and feel strong. * Minerals are a major part of every cell and the larger variety we have in our food. Classification Of Minerals * Calcium * Magnesium * Potassium * Sodium * Zinc * Phosphorus * Iron * Iodine Calcium * Calcium is important for building strong bones and teeth. * The time to build strong bones is during childhood and the teen years‚ so it’s very important to get enough calcium to fight
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TABLE OF CONTENT CONTENTS PAGE NO. 1. Introduction a. Objective 3 b. Introduction 3-4 2. Material and Methodology a. Materials & Apparatus 5 b. Procedure 5 3. Results and Discussions a. Results & Calculations 6-8 b. Discussions 9-10 4. Conclusion 10 5. Reference 11 6. Appendix 12 OBJECTIVE 1. To enable students to familiarize themselves with
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It’s easier to work with in many ways than traditional waxes. The clear gel allows you to achieve many interesting looks‚ from floating beads to underwater scenes. First‚ you need to get all the stuff for making gel candle. Material Candle gel Zinc Wicks Fragrance oil Liquid color dye Glass container Stainless steel pot Equipment Hot glue gun Thermometer Oven/stove Second‚ heat gel wax on direct heat‚ in the stainless steel pot. Gel wax needs higher temperatures and a double boiler
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The statue of Liberty first arrived in America in 1886 and took up permanent residency on Bedloe’s island in New York Harbor. The statue weighs in at 280 tons and is visible for more than 42 miles on a clear day. The statue of Liberty is without a doubt‚ among the most monumental figures in American history. The Statue of Liberty is made of an aluminum scaffolding‚ an iron framework and metal skin made from copper. Originally‚ she was to be made of bronze‚ but weight problems required a switch to
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(totalling 64 billion tonnes) occur in Western Australia. 5% of the Earth’s crust is made up of iron. It is the 4th most occurring natural element. * Zinc (Zn): Mined primarily in Broken Hill‚ which is the largest producer of lead-zinc-silver in Australia. Australia is first in the world in zinc . Australia is third in the world in production of zinc ore. * Opals (SiO2-nH2O): Australia dominates the in the production of opal‚ producing over 90% of the worlds natural opal. Australian opal
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