Concentration of the ore. Froth floatation. Other elements occur as ores i.e. This is due to the high temperatures involved during the process. Formation of iron oxide as a protective layer on the metal surface. Metals combine with other substances to form compounds. The copper obtained is 97.5% pure. The charge is loaded into the top of a tall furnace called blast furnace . 1400, Consequently the molten iron would easily solidify at the base (Temp =1400, Impurities absorbed by iron during melting ( mainly carbon ) reducing the melting point to below 1400. VO3:Ship Hull is made of steelZinc is sacrificed to protect the steel. Carbon (II) Oxide and coke are the reducing agents in the furnace. Coursework e-Content CD covers all the topics for a particular class per year and costs 1200/- ( Per Subject per Class ). Notes 4 CHEMISTRY MODULE - 6 Occurrence and Extraction of Metals Chemistry of Elements Copper India does not have rich copper ore deposits. Our notes of Chapter 3 Metals and Non-metals are prepared by Science experts in an easy to remember format, covering all syllabus of CBSE, KVPY, NTSE, Olympiads, NCERT & other Competitive Exams. Chemistry Notes Form 4 PDF Download Free! At 8000c the limestone decomposes to calcium oxide and carbon ( IV) oxide. petroleum, kerosene, Sodium burns in oxygen with a golden yellow flame to form sodium peroxide. Dissolution of the anode, hence the impure lead rod decreases in size. Copper glance (Cu 2 S) is the ore of copper. The electrolytic product is 99.98% copper. To the second portion add sodium hydroxide solution dropwise till in excess, formation of a pale blue precipitate insoluble in excess confirms presence of Cu. Zinc is above hydrogen in the reactivity series hence displaces hydrogen from steam (water) and dilute acids like H. Pure zinc reacts slowly while impure zinc reacts faster/more quickly. Download chemistry klb notes on metals form 4 document. mining. Zinc is amphoteric and dissolves in hot alkalis to give the zincate ion and hydrogen gas. Get Revision Notes of Class 10th Science Chapter 3 Metals and Non-metals to score good marks in your Exams. What is the function of the steel guaze cylinder? The earthy impurities in the ore (mainly silica) react with calcium oxide from decomposition of limestone to form calcium silicate. Reduce the amount of current / use a low current. (Courtesy of You Tube), VO1:Making coins and ornaments VO2:Making alloys such as brass (Cu & Zn) Bronze (Cu & Sn) VO3:Making soldering instruments due to the high thermal conductivity VO4:Making electrical wires and contacts in switches plugs and sockets because copper is a good conductor of electricity. The high heat of formation of Aluminium oxide , results into a vigorous exothermic reaction that leads to a molten metal. (Courtesy of You Tube). manganese. Traces of silver and gold collect as sludge at the bottom of the cell. The oppositely charged particles follow different paths and can then be separated. Concentration is possible due to difference in properties between the mineral compound and the earthy materials. A covalent compound is formed by equal sharing of electrons between or among the combining atoms. Is a transition element that combines with other elements to form compounds with 2 oxidation states. Iron produced settles to the bottom of the furnace and melts at 15390C. Strips of pure copper are used as the cathode whereas the anode is made of the impure copper as shown in the following video clip. - Making iron nails; horse shoe; agricultural implements like pangas; - Are alloys whose main components is iron. Save my name, email, and website in this browser for the next time I … Consequently steel wool or wood ash should NOT be used in aluminium utensils. Read Free Chemistry Form 4 Notes Topic Metals Chemistry Form 4 Notes Topic Metals Right here, we have countless book chemistry form 4 notes topic metals and collections to check out. Two reducing agents are used in this process: Coke and carbon (II) oxide; with carbon (II) oxide being the main reducing agent. « Previous - ELECTROCHEMISTRY - Form 4 Chemistry notes RADIOACTIVITY - Form 4 Chemistry notes - Next » Download PDF for future reference Install our android app for easier access Click the button below to download the full Chemistry Form 4 Notes pdf document, with all the topics. biology ,chemistry, physics, english, kiswahili, history, geography, history, comp, business, mathematics, cre , ire For Best results INSTALL Adobe Flash Player Version 16 to play the interactive content in your computer. An alloy is a uniform mixture of a metal with one or more other substances e.g. Click to play the following video clip to observe how this electrolysis takes place. Zinc occurs in many parts of the world as calamine which is mainly Zinc Carbonate and Zinc blende which is mainly Zinc sulphate. Although electrolysis is an expensive way of obtaining metals, it must be used for some metals. Steel wire gauze separates the electrodes. Reduction of Iron( III) Oxide is carried out in a blast furnace. The limestone undergoes decomposition to give calcium oxide and liberate carbon (IV) oxide; The calcium oxide reacts with silica in form of SiO. chemistry form four full notes Admin Tuesday, April 17, 2018 GET NOTES AND MATERIALS VIA WHATSAPP FOR PAYING A LIITLE AMOUNT OF MONEY; CONTACT US NOW : 0759 146185 OR 0622 105 865 Zinc exist as vapour form at the furnace temperature and leaves at the top of the furnace. (Note: the reaction of sodium and dilute acid is explosive) 22.2.3 Uses of metals and their alloys (alloys: brass, bronze, steel, duralumin) - construction (air craft, bridges etc. O . The ore is concentrated by froth floatation . (g) + 2FeO(s). Join our whatsapp group for latest updates, Support and Movement in Plants and Animals - Biology Form 4 Topical Revision Questions and Answers, Radioactivity - Chemistry Form 4 Topical Revisions Questions and Answers, Organic Chemistry 2 - Chemistry Form 4 Topical Revision Questions and Answers, Metals - Chemistry Form 4 Topical Revision Questions and Answers, Electrochemistry - Chemistry Form 4 Topical Revision Questions and Answers, Aluminium, copper, manganese and magnesium, - Refers to iron just after it has been produced in the blast furnace. Revision Notes 3.1 Oxidation and Reduction 3.2 Redox Reaction 3.3 Redox Reaction – Iron(II) and Iron(III) 3.4 Redox Reaction – Displacement of Metals 3.5 Redox Reaction – Displacement of Halogens 3.6 Redox Reaction – Transfer of Electrons 3.7 Corrosion as a Redox Reaction 3.8 Series of Reactivities of Metals The apparatus for the preparation of AlCl. The insoluble lead (II) sulphate is then precipitated and separated by filtration; The zinc sulphate is then dissolved in water and the solution electrolysed. Used for metals high up in the reactivity series. Hot unreacted/waste gases leave at the top of the furnace. 2 ⎯→ 2Na. The iron ore, coke and limestone are heated by blasting in hot air at 6000C blown in from the bottom of the furnace. C(s) + O2(g) NOTE: The copper produced by this method is 99.98% pure. Calcium chloride is added to sodium chloride to lower the melting point of The following are some of the uses of Copper. Copper (II) sulphate solution is used as the electrolyte. This process involves formation of an oil froth onto which the ore floats hence the name froth formation . Sodium metal is extracted by the downs process where molten sodium chloride is electrolysed. steel is an alloy of iron with carbon chromium and Test the Click to play the following video clip to observe how this electrolysis takes place. 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