powers’ interests in Germany‚ In other words‚ In order for Bismarck to unify Germany he had to eliminate all the other powers that posed a threat to German unification. Since the political approach had failed‚ Bismarck adopted a policy of "blood and Iron" for his plans of unifying Germany. Bismarck was a cunning politician who always made the other side seem the aggressor and in this way always appeared the victim. By manipulating political situations‚ Bismarck succeeded in going to war‚ and defeating
Free Otto von Bismarck Prussia Kingdom of Prussia
Rusting of iron couplingCertification : It has been certified that Akash Sharma having CBSE Roll No. Studying in XII-A (Science)‚ during the academic year 2010-11 has completed a project on the Study of the Affect of Metal Coupling on the Rusting of Iron and has given satisfactory account of this in his project report Shri D.K Gupta External Examiner PGT Chemistry Signature Signature Declaration : I ‚ Akash Sharma of Class XII A (Science)
Premium Oxygen Iron Corrosion
different types of metals and four different liquids. I will be using a penny‚ nail‚ paper clip and a needle as my four metals. My four liquids will be vinegar‚ beach‚ lemon water and salt water. To get started‚ the metal contents should be established. Today’s pennies are mostly made of zinc with a thin layer of copper overcoating. A nail is a form of carbon steel or black iron. Paper clips are made from a low grade steel. A needle is made from stainless
Premium Corrosion Oxygen Steel
temperatures. The contents inside the hand warmers‚ mainly the iron powder and activated charcoal‚ and oxygen in the atmosphere‚ react with each other chemically to create warmth. Inside the pouch‚ there is iron powder. When it comes in contact with oxygen‚ the iron rusts and releases heat. The outside bag is a microporous pouch‚ which has tiny holes that are big enough to allow air inside‚ providing the oxygen for the reaction between iron and oxygen. Inside the hand warmer‚ there is also activated
Premium Temperature Heat Heat transfer
Hypothesis: I predict that air (oxygen) and water are necessary for iron to rust. The nail in water with air will rust while the nails in dry air and in boiled water with no air will not. I also predict that galvanizing the nail with zinc and greasing the nail and painting the nail and electroplating the nail will inhibit rusting. I also predict that adding NaCl to the test tube with water and air will promote rusting of the iron nail. Background information: Rusting is the chemical reaction between
Premium Oxygen Iron Water
315109) CORROSION THEORY SUMMARY & REVISION QUESTIONS (CRITERION 5) Tasmanian TCE Chemistry Revision Guides by Jak Denny are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License INDEX: PAGES • INTRODUCTION • EFFECTS OF CORROSION • ELECTROCHEMICAL EFFECTS • FACTORS AFFECTING CORROSION • THE RUSTING OF IRON • IDENTIFYING ANODES & CATHODES • DIAGRAMMATIC SUMMARY • DIFFERENTIAL AERATION • DIFFERENT METALS IN CONTACT • CORROSION PROTECTION • THE CORROSION OF ALUMINIUM
Premium Corrosion Aluminium
very hard which makes it good for creating bolts and nuts as well as machine parts. Steel: Steel is an alloy of iron and carbon. The proportion of carbon to iron varies the hardness of the alloy‚ the ductility and the tensile strength. Steel can be made stronger than pure iron however is also less ductile. If steel is soft‚ malleable and ductile it is used for sheet steel‚ nails and wires. If it is hard and moderately ductile‚ it is used for railway tracks and axles. If it is very hard with a
Premium Zinc Iron Steel
Class X Question 1: Chapter 1 – Chemical Reactions and Equations Science Why should a magnesium ribbon be cleaned before burning in air? Answer Magnesium is very reactive metal. When stored it reacts with oxygen to form a layer magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper to remove this layer so that the underlying metal can be exposed into air. Question
Premium Chemical reaction Oxygen Chlorine
ALLOYS Unit – 7 Ferrous: Iron based alloys Non-ferrous: other than ferrous alloys with no iron content FERROUS METALS AND ALLOYS What is a ‘ferrous metal’ or ‘ferrous alloy’? It is simply a metal or alloy that contains Iron (the element ferrous) as the base (starting) metal. 26th element Iron or Ferrous 55.85 Atomic Mass GENERAL CATEGORIES OF FERROUS METALS AND ALLOYS Carbon and alloy steels Stainless steel Tool and Die steel Cast Irons Cast Steels **Ferrous tools
Premium Steel Iron
9 ………………………………………………………………………….31 Flame Test Experiment 10 ………………………………………………………………………..32 Electromotive Series Experiment 11 ………………………………………………………………………...33 Oxidation – Reduction Reactions/ Some Aspects of Corrosion Experiment 12………………………………………………………………………….35 Colligative Properties GENERAL INSTRUCTIONS TO THE STUDENTS Apparatus ▪ Check each piece of apparatus‚ which you find in your locker from the duplicate list furnished
Premium Chemistry Laboratory glassware Sodium chloride