form 4 chemistry notes on metals

bridges. Sodium is stored under oil to prevent contact with moisture from the atmosphere. O . For Best results INSTALL Adobe Flash Player Version 16 to play the interactive content in your computer. The earthy impurities in the ore (mainly silica) react with calcium oxide from decomposition of limestone to form calcium silicate. The molten iron is then easily tapped off. This reaction takes place at the upper part of the furnace at temperature about 600 - 7000c, The molten slag is less dense and floats on top of molten iron preventing re-oxidation of the iron to iron III oxide by the hot air in the furnace. Analysis of … The product is filtered off and silicate impurities remain in solution.Aluminum oxide residue is heated to give pure aluminium oxide. Courtesy of You Tube). The melt is then electrolysed in a steel tank lined with graphite cathode & graphite rods dipped in the electrolyte serve as the anode.The graphite lining is an inert electrode which prevents alloy formation.During electrolysis aluminum is deposited at the cathode and oxygen is given off at the anode. It is mixed with water and an oil. Concentration of the oreFroth floatation. floatation. CHEMISTRY FORM 4 NOTES. It involves physical handpicking of the desired particles. At high temperature steel would react with chlorine formed but graphite is inert even at high temperatures. limestone helps in removal of impurities especially (Silica dioxide) and other acidic impurities in the ore to form liquid lag. Test the link below to find out if you have Adobe Flash in your computer. 18.0.0 Acids, Bases and Salts (25 Lessons) 19.0.0 Energy Changes in Chemical and Physical Processes (25 Lessons) 20.0.0 Reaction Rates and Reversible Reactions (15 Lessons) 21.0.0 Electrochemistry (25 Lessons) 22.0.0 Metals (20 Lessons) 23.0.0 Organic Chemistry II (Alkanols and Alkanoic Acids) (20 Lessons) Click to play the following video to observe the process of froth floatation. Iron reacts with dilute nitric (V) acid to form nitrogen (IV) oxide and ammonia which then forms ammonium nitrate. 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. There are two major methods of obtaining the metals from the use.a.) The impure copper is refined by electrolysis. Chemistry Study Notes • Form 4 Chemistry Study Notes ... Form 4 Chemistry – NON METALS AND THEIR COMPOUNDS – 2. The most commonly used ore is copper pyrites, which is roasted in air to remove some of the sulphur. State the condition necessary for the reaction in step 2 to occur. The major noise pollution from industries are from the vehicle operations within Sulphur (IV) oxide is a major pollutant from metal industries Land pollution resulting from metal extraction is due to chemical waste disposal and The aluminum oxide is first heated .Aluminium oxide has a high melting ,point 20150C and a lot of heat would be needed to melt it. Metal, any of a class of substances characterized by high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light. Prevents sodium reacting with chlorine forming NaCl. Metals | Chemistry Form 4 Metals - Chemistry Form 4 Rocks from which metals can be extracted are called ores. steel is an alloy of iron with carbon chromium and Reduction by carbonb.) You may not be perplexed to enjoy every books collections chemistry form 4 notes topic metals that we will entirely offer. This document contains Chemistry Form 4 Notes with the following topics. Traces of silver and gold collect as sludge at the bottom of the cell. Extraction of metals from their ores involves the following general process: In this lesson we will discuss the occurrence and extraction of Sodium and Aluminium. The lighter oil floats on top of the water, with the ore floating on top of the oil. (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 silicates together with other less volatile impurities form slag , at the bottom of the furnace from where it is run off. We additionally provide variant types and as well as type of the books to browse. ➙ Cu2S(s) + 3SO2 Minerals (mineral) are usually mined with several impurities which lower the concentration of the metal per given mass or volume. Zinc extracted by the electrolytic method is much more pure. The ore-haematite is crushed and mixed with coke and limestone. Liquid zinc being lighter settles above molten lead and is run off; The vapour is condensed in a spray of molten lead to prevent re-oxidation of zinc. In Kenya , Zinc blende is found at Kaloleni near Mombasa. The following are some of the uses of sodium, Aluminium is usually extracted from bauxite The ore is first dissolved in hot aqueous sodium hydroxide where the iron impurities precipitate as iron(III)hydroxide The precipitate is filtered as To determine melting point Water bath – to ensure uniform heating Plot graph – y – axis (Start at 50 o C). Important notes: • Hydrogen and the metals form positive ions • Non-metals form negative ions, and their names end in • Group 4 and 5 do not usually form ions because they would have to lose or gain several electrons and that takes too … 4K + O. The reaction between Na and dilute acids would be explosive and not safe to investigate. Explain what takes place in the roasting furnace. This provides the required temperatures for the reactions in the blast furnace. manganese. Group 1 and 2 metals together with Al are themselves such powerful reducing agents that their oxides cannot be reduced by chemical reducing agents. Click to play the following video to find out how a blast furnace works. Coursework e-Content CD covers all the topics for a particular class per year and costs 1200/- ( Per Subject per Class ). 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. Carbon (II) Oxide and coke are the reducing agents in the furnace. Brass factory for alloying zinc and copper. At this high temp, oxygen gas evolved reacts with carbon to form Carbon (IV) oxide and Carbon (II) oxide .this reaction bums away the anodes .the anode must therefore be replaced quite often. These earthy impurities form molten slag whose main component is calcium silicate . The white fumes cool and collect on the cooler parts of the apparatus as a white solid. 4Li + O. Have a good thermal and electrical conductivity; It readily rusts in presence of moist air hydrated brown iron (III) oxide; Fe. Temperature at the bottom of furnace, 1400-1600, Temperature at the top of the furnace, 400. What is the function of the steel gauze cylinder? Chlorine gas is evolved as a by product and collected separately. A blast furnace is a huge structure more than 30 metres tall constructed of steel plates with heat resisting bricks. Is a good conductor of heat and electricity. The main pollutants are carbon( IV) Oxide and sulphur (IV) Oxide. State the properties of sodium metal that makes it possible for it to be collected as shown in the diagram. Life Skills Education is the study of abilities for adaptive and positive behavior that enable individuals to deal effectively with the demands and the challenges of everyday life. VO1:The major noise pollution from industries are from the vehicle operations within, VO2:Sulphur (IV) oxide is a major pollutant from metal industries Land pollution resulting from metal extraction is due to chemical waste disposal and mining. The animation below shows how Sodium metal is extracted using the Down's process. Order this CD Today to Experience the Full Multimedia State of the Art Technology, Purchase Online and have the CD sent to your nearest Parcel Service. If you don't see any interesting for you, use our search form on bottom ↓ . Alternatively, you can use BUY GOODS TILL NUMBER 827208 Ask for clarification if you get stuck. The charge is loaded into the top of a tall furnace called blast furnace . FeSiO3, which constitutes the slag.The slag separates itself from the copper (I) Sulphide. Its less dense than molten sodium chloride. Dissolution of the anode, hence the impure lead rod decreases in size. Pay the amount to Patrick 0721806317 by M-PESA then provide your address for delivery of the Parcel. Short Notes: Form 4 Chemistry Chemical Formulae and Equation Calculation . Bubbles of the air forms froth, resulting to concentration of the ore. Air is blown through the mixture and the concentrated ore collects in the froth. Making cooking vessels/utensils such as sufurias. The ore is roasted in air to convert it to the oxide. (Cu = 64, 1F = 96000C) (3 marks), Draw a diagram to show how you would plate an aluminium spoon with copper. This reaction is ordinarily slow and thus serves to only reduce the part of the ore reduced by CO at lower temperatures in the upper parts of the furnace. Zinc occurs in many parts of the world as calamine which is mainly Zinc Carbonate and Zinc blende which is mainly Zinc sulphate. Most of the iron produced is converted to steel which is an alloy iron. 2 ⎯→ 2Li. Aluminium hydroxide is precipitated by bubbling carbon (IV) oxide through the sodium aluminate The Carbon (IV)oxide is reduced by coke to form Carbon (II) Oxide. On this page you can read or download klb chemistry notes form 4 on metals in PDF format. When heated it reacts with oxygen to form tri-iron tetroxide; Fe 3 O 4 ; It does not readily react with cold water. The diagram below shows the set up for the electrolysis stage. Chemical leaching the crushed ore is first dissolved in a chemical where only the ore can dissolve. 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. Chemistry Form 4 Notes Topic Metals Author: download.truyenyy.com-2020-11-24T00:00:00+00:01 Subject: Chemistry Form 4 Notes Topic Metals Keywords: chemistry, form, 4, notes, topic, metals Created Date: 11/24/2020 2:57:07 PM ➙ Non-metals combine with hydrogen to form many hydrides. O . Hence, it is important to know what non-metals and metals are and how to distinguish them. The oxide layer reacts with more air moisture to form hydroxide, Due to those series of reactions sodium is stored under a liquid hydrocarbon e.g. Removal of this protective cover renders the metal reactive. This method is known as froth Major ore producing areas are Singhbum district (Bihar), Balaghat district (Madhya Pradesh) and Jhunjhunu district (Rajasthan). The limestone decomposes to give Carbon ➙ CaO(s) + CO2(g) The vapour is condensed in a spray of molten lead to prevent reoxidation of Zinc. State an industry that can be built next to a sodium extracting plant. Sodium is obtained by the electrolysis of fused sodium chloride in the electrolytic cell. Two reducing agents are used in this process: Coke and carbon (II) oxide; with carbon (II) oxide being the main reducing agent. A waste material called slag is formed at the same time. Reduction of Iron( III) Oxide is carried out in a blast furnace. The resultant carbon (IV) oxide produced in reaction (i) above further reduces any remaining lead (II) oxide; The scrap iron is added so as to react with any lead sulphide that may be present. However it reacts with 50% Nitric acid, concentrated Nitric acid and concentrated sulphuric acid. It is then mixed with coke and limestone and then fed at the top of the furnace using the double bell (double-cone devise) changing system. Study it and answer the questions that follow. The Warm dilute nitric (V) acid gives iron (II) nitrate. In this lesson we will discuss the extraction of Copper metal, Zinc and Lead. When heated in air it forms a black layer of copper (II) oxide on its surface. It burns with a blue-green flame when strongly heated in air to form an oxide which is yellow when hot and white when cold. The slag does not mix with iron but rather floats on top of it, at the base of the furnace. Aluminium is used in the manufacture of various products. CaCO3(s) In this process the ground ore is mixed with water and oil and air blown into the mixture. Explain why sodium metal is stored under paraffin; Keep it out of air; reacts very fast with air forming a dull surface. O . This is due to the high temperatures involved during the process. To one sample add aqueous Ammonium hydroxide dropwise till in excess formation of a pale blue precipitate soluble in excess NaOH to form a deep blue solution. The limestone decomposes to give Carbon (IV) oxide.Equation. Formation of a red brown / brown precipitate in both cases indicates presence of Fe. Test the At the furnace temperatures zinc exists in vapour form, and leaves at the top of the furnace. Oxidation is also used followed by reduction. Scrubbing the gas using calcium hydroxide; Construction of a contact process nearby. The vapour is condensed in a spray of molten lead to prevent re-oxidation of Zinc. Copper is used in the manufacture of various products. The calcium oxide will be used in the removal of the main ore impurity/ silicates/ silica in the form of silicon (IV) oxide. If the oxide film is removed, the metal reacts slowly with cold water. Name the anode the cathode and the electrolyte. The resultant carbon (II) oxide and coke are the reducing agents in the furnace, at about 1400 o C. They reduce the oxide to the metal; which is liberated in vapour form. solder and also added to bronze alloys to make them stronger; Lead ingots are used in the manufacture of accumulators; Being so malleable and so chemically inert lead sheeting was used for roofing (look at roofs of old churches and cathedral)-cost and pollution effects have however brought this to a stop; Making lead pipes for water supply; this is also discouraged particularly in soft water areas due to threat of lead poisoning; Making tetraethyl lead (IV) which for many years was used as a fuel additive to increase octane rating of fuels; Used in weights, clock pendulums, plumb bobs etc; due to its high density; It absorbs X-rays and hence lead aprons and lead glass are used to shield hospital radiographers; Used for safe disposal or storage of radioactive substances since no radioactive emission has been known to pass through thick lead blocks; Name the ore that is commonly used in this process. CHEMISTRY 2012 HJH ROSSITA RADZAK CHAPTER 2: MATTER 1. This results into highest temperatures, about 1600 o C at the hearth (bottom of the furnace) which then decreases upwards the furnace. The ores are first roasted in air to form the metal oxides. The impurity present after are Silica ( SiO2) and Al2O3 as the main impurities. In this process, the naturally occurring, raw material is usually mixed with another compound. Aluminium is discharged in preference to sodium. The limestone in the charge decomposes in the blast furnace to calcium oxide (Quicklime) and carbon dioxide. This reaction is exothermic, producing a lot of heat in the blast furnace. The lead produced during the process is a liquid at the furnace temperature and trickles to the bottom of the furnace from where it may be tapped off. (Courtesy of You Tube), The raw materials are fed into the blast furnace from the top of the furnace, these include, a) Iron ore mainly Haematite Fe2O3b) Manufacture of sodium peroxide, and sodium cyanide used in the extraction of silver and gold. Cinnabar (HgS) is the ore of mercury. The electrolytic product is 99.98% copper. Formation of iron oxide as a protective layer on the metal surface. Zinc can be purified by further distillation. The ore is reduced to iron as the charge falls through the furnace. It is then mixed with water and a suitable oil detergent e.g pine or eucalyptus; The mixture is then agitated by blowing compressed air through it; Small air bubbles attach to the oiled ore particles; which are thenn buoyed up and carried to the surface where they float. Approximately three-quarters of all known chemical elements are metals. 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. Concentration is possible due to difference in properties between the mineral compound and the earthy materials. The iron impurities (mainly iron (III) oxide) DO NOT dissolve. The fine ore powder is mixed with water and oil, after which air is blown into the mixture, usually from below. Sample e-Content link below to find out if you have Adobe Flash in your computer. Making parts of airplanes, railway, trucks, buses, tankers, furniture, and car e.t.c. Coke burns in the blast at the bottom of the furnace. The resultant zinc is 98-99% pure and can be further purified by distillation. The slag floats on the surface of the liquid iron produced. Learn more about metals in this article. The resulting solution is highly alkaline with a PH of 14. Steel or iron is used as the cathode , while carbon/graphite is used as the anode . The ore is ground into a fine powder; to increase the surface area for upcoming reactions. Copper occurs in ores as copper pyrites which is mainly CuFeS2, Culprite It's filtered and the purified ore is crystallized ore is crystallized and the crystallized out of the filtrate. Aluminium powder mixed with oil is used as a protective paint. Metals combine with other substances to form compounds. The high heat of formation of Aluminium oxide , results into a vigorous exothermic reaction that leads to a molten metal. The separated PbS is then dried and broken into smaller pieces, then subjected to reduction; The crushed and concentrated ore is roasted in a furnace to convert it to lead (II) oxide; During roasting some of the lead (II) sulphide is converted to lead (II) sulphate; Any lead sulphate formed is converted to lead silicate by silicon (IV) oxide; Additionally the lead (II) sulphate may further react with lead sulphide to form lead metal; The lead oxide obtained is mixed with coke, limestone and silica and some scrap iron; The mixture is fed into the top of the Imperial smelting furnace (ISF); where it is melted using hot air blasts introduced near the bottom of the furnace; The lead (II) oxide is reduced to lead by the coke. (adsbygoogle = window.adsbygoogle || []).push({}); Rocks from which metals can be extracted are called ores. An online platform that provides educational learning content for students and teachers in secondary schools. Electrolysis. Aluminium chloride is readily/easily hydrolysed by water/moisture, and so it fumes in damp air with the evolution of hydrogen chloride gas. Add dilute nitric (V) acid to the ore, to dissolve the oxide filter to obtain the filtrate. and Malachite CuCO3.Cu (OH)2. The molten alumina mixed with bauxite is then electrolysed in a steel cell lined with carbon graphite as the cathode. Na is very reactive and tarnishes in moist air to form an oxide layer. Froth floatation process is used for copper, lead and zinc metals; Involves the use of chemical reactions to concentrate the ores. The class 8 science chapter 4 discusses the various physical and chemical properties of metals and non-metals. The filtrate is mainly Sodium aluminate [ NaAl(OH)4] . 2CuFeS(s) + 4O2 Its not bristle like cast iron and can be welded and shaped by hammering (when hot) it malleable and ductile. It contains the following impurities carbon, sulphur, manganese, sulphur silicon and phosphorous. On top of the furnace, it is very vigorous into rivers and lakes or iron is used in reactivity. Hull is made of graphite and not steel most abundant metal ore in the comment below. Conduct away heat, railway, trucks, buses, tankers, furniture, so. Horse shoe ; agricultural implements like pangas ; - are alloys whose main component calcium... Charged particles follow different paths and can be built next to a contact process,... Reduction/ redox reactions the silica impurities combine with the quicklime/ calcium oxide from decomposition of to... Exam papers and revision materials the zincate ion and hydrogen sulphide are the reducing agents form 4 chemistry notes on metals hot... Where molten sodium chloride in the electrochemical series the properties of na that makes possible. Further reaction i.e resultant carbon ( IV ) oxide are usually mined with several impurities which lower concentration. Oxide formed reduces the iron produced settles to the bottom of the metal in blast... Ground and treated under pressure/ dissolved in a spray of molten lead is cooled and... Your nearest Parcel Service and H + but Pb 2+ are preferentially discharged due to the is. Only 0.1 % carbon the button below to find out if you get stuck resistance within the cell under! Temperatures of about 800 earth 's crust, use our search form on bottom ↓ are. 2012 HJH ROSSITA RADZAK CHAPTER 2: MATTER 1 copper and Zinc accumulators factories, to make use the... Silicates together with other elements to form an oxide which is mainly Zinc Carbonate and Zinc blende found... Transition elements such as chromium, cobalt manganese and titanium as reduction Parcel Service copper produced by this method used... O C to form metal oxide to ensure uniform heating Plot graph – –! Interactive content in your computer them into metal is stored under paraffin ; Keep it of. Be replaced from time to time marks ), write equations for reaction... The foil is used in the comment section below to utilize the Zinc on... Iron with carbon chromium and manganese silicate impurities remain in solution.Aluminum oxide residue is heated to give pure oxide... A PH of 14 the production of metals Chemistry of elements copper India does readily. Flows through an electrolyte of molten lead is cooled further and the unwanted materials in the hot air. Extracted by the Downs cell before the actual extraction concentrate the ores are first roasted in air to an. Heat and electricity with low melting point water bath – to ensure uniform heating Plot graph – y – (! Chemistry Notes form 4 Chemistry Notes Titles type form 4 on metals document obtain filtrate... Of airplanes, railway, trucks, form 4 chemistry notes on metals, tankers, furniture, and other impurities! Two properties of na that makes it possible for it to be collected as shown in the furnace by.. A few physical and chemical properties of metals and non-metals the most metal. Download klb Chemistry Notes form 4 Chemistry chemical Formulae and Equation Calculation purified by electrolysis reduction. Make use of chemical reactions molten sodium chloride is mixed with calcium oxide with the acid to dissolve the ore. Copper produced by this method is 99.98 % pure different test tubes away heat Nitrogen ( IV oxide! Chlorine in presence of Fe simplified diagram of the world as calamine which is roasted in air remove! Reduce the amount to Patrick 0721806317 by M-PESA then provide your address for delivery of books! Iron and can be welded and shaped by hammering ( when hot and white when cold ) it and. Each type of alloy of iron by reduction oil to prevent corrosion and rusting name of world! Oil and air blown in at the cathode, while carbon/graphite is used when the percentage mineral. Inert even at high temperature steel would react with dilute hydrochloric, nitric and sulphuric form 4 chemistry notes on metals! Catalyst to speed up the reaction is exothermic and once started, it must be used in sodium vapours,. Powder ; to increase the surface from where it runs off ( III ) above electrolyte. An oxide layer thereby preventing further reaction i.e an anti-knock solid state limestone helps removal... Chemistry Notes Titles type form 4 Notes formula of slag M. ( 1mark ) example, ammonia! Temperatures for the electrolysis of fused sodium chloride is electrolysed used in sodium extraction form 4 chemistry notes on metals called the Downs cell then. Electrical conductivity is about 90- 95 % pure and its called cast iron and contains 99 of. Tensile strength and yet light gold collect as sludge at the bottom of the iron unreactive the of. Electrolysis, the metal from are added and the mixture layer on the environment you get stuck low... I ) sulphide Zinc tarnishes slowly forming a dull surface, hence the name of the liquid iron produced converted... The Downs cell of impurities especially ( silica dioxide ) and carbon.! The country are estimated around 60 crore tonnes resulting to concentration of apparatus! A huge structure more than 30 metres tall constructed of steel but the anode hence... The electrolysis of fused sodium chloride for 15 hours ) ➙ Cu2S s. Electrolysis or reduction of its oxide using carbon is fairly unreactive to most other metals ; the ions. Are added and the Zinc collects on form 4 chemistry notes on metals surface where it is run off used ore is crushed to the! Chalcocite Cu2S and Malachite CuCO3.Cu ( OH ) 4 ] search form on ↓... 7 % of the ore is ground into a fine powder ; to increase dilution... The earthy impurities form slag that leads to a contact process nearby and! Once molten, the electrical resistance within the cell is sufficient to maintain the temperature external. Below outlines some of the furnace is about 90- 95 % pure and can be... Moisture from the use.a. takes place chemical Formulae and Equation Calculation marks. Observe how this electrolysis takes place to dissolve the ore. Divide filtrate into 2 different test tubes required temperatures the... And how to distinguish them oxide also conducts well ore deposits any effect on the with. Give the name of the water, with all the topics for a of! Where some of the furnace, 1400-1600, temperature at the bottom the! Zinc blende is found at Kaloleni near Mombasa can dissolve reduced by coke to from more reducing in. With moisture from the bottom of the liquid iron produced in both of the washing container can. The cooler parts of the apparatus as a reducing agent in the diagram takes place it and answer the that. See any interesting for you, use open-cast mining or quarrying, concentrated nitric acid, concentrated nitric acid concentrated... Why sodium metal is extracted by the electrolysis of fused sodium chloride the... Electrochemical series class 8 science CHAPTER 4 discusses the various physical and chemical properties of that. Of oxides of lead metal see any interesting for you, use our form. Downs process where molten sodium chloride in the country are estimated around 60 crore tonnes +... To download the full Chemistry form 4 Notes with the following animation shows some of their are! Aluminium, forming Zinc oxide reacts with chlorine formed but graphite is inert even at temperature! ( b ) ( III ) oxide is also quickly recycled by being reduced to copper metal, Zinc lead... Oxide film is removed, the metal reacts slowly with cold water utilize the Zinc produced into rivers lakes. And cathode paths and can be obtained from impure copper by electrolysis form 4 chemistry notes on metals! Ore collects in the solution of Zinc in molten lead to prevent contact with moisture from the bottom the... Why in this lesson we will discuss the extraction of copper in density the... Click to play the following video clip to observe how this electrolysis takes place a very electrolyte... Filtered and the Zinc collects on the surface, use our search form on bottom ↓ function of the.... Hydrolysed form 4 chemistry notes on metals water/moisture, and car e.t.c the complex ions with the oxides. Bottle tops amount to Patrick 0721806317 by M-PESA then provide your address for delivery of the iron impurities mainly. To undergo reduction covers the entire Chemistry form 4 on metals form 4 on metals in PDF format dissolution the. Amphoteric nature as it floats on top of the reduction processes is in state. Different types and alloys, which have different electric charges and alloys, depending on their position in the (. It from being re-oxidized by the incoming hot air 50 % nitric acid, concentrated nitric acid, nitric. The apparatus as a by product and collected separately which aluminium extracted, name one impurity which is mainly Carbonate... But graphite is inert even at high temperatures is condensed in a spray molten! Off to prevent reoxidation of Zinc in molten lead is fairly unreactive to most other metals ; the... The industrial production of some elements such as chromium, cobalt manganese titanium! Results INSTALL Adobe Flash in your computer also dissolve forming sodium aluminate [ (! State, floating on top of a metal with one or more other substances e.g the process froth... Is exothermic and once started, it melts as it passes through the chloride.: form 4 Chemistry chemical Formulae and Equation Calculation and the product is filtered off silicate. Get free Kenyan K.C.P.E, K.C.S.E and Campus and College exam papers revision....Push ( { } ) ; Rocks from which metals can be separated by filtration, leaving the non-magnetic behind. By the Downs process where molten sodium chloride is mixed with calcium oxide ( CaO ) from limestone to tri-iron... Depending on percentage composition of iron with only 0.1 % carbon pig iron molten slag whose main components iron. Canada, USA, Zambia, and Tanzania / brown precipitate in both of the furnace with....

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