Hypothesis: I think that the chemical change is an irreversible process. The wet iron filings by the next day it will turn into rusting material because it is exposed to the atmosphere. While the dry iron filings is not III Materials: The setup in the previous activity‚ small plate‚ dry iron filings. IV Procedure: 1. Place the iron filings on a dry plate. 2. Compare the physical properties of the dry and wet iron filings. 3. Take note of the differences in their physical properties if any.
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Hypothesis: Rust is a reddish or yellowish-brown flaky coating of iron oxide that is formed on iron or steel by oxidation‚ especially in the presence of moisture. The rusting process is electrochemical‚ meaning it forms from a chemical reaction which takes place in a solution where there is an electron transfer between the electrode and the electrolyte or species in solution. In the case of rusting‚ the transfer of electrons from iron to oxygen begins the electrochemical process. Electrolytes accelerate
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Extractive Metallurgy Minerals are naturally occurring chemical substances in the earth’s crust obtainable by mining. Out of many minerals in which a metal may be found‚ only a few are viable to be used as sources of that metal. Such minerals are known as ores. Examples: Galena‚ PbS‚ etc. It is usually contaminated with earthly or undesired materials known as gangue. The extraction and isolation of metals from ores involve the following major steps: • Concentration of the ore‚ • Isolation of the
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Upon doing research on heavy metals in our water ways I have come to realize that almost all heavy metals can be found in our rivers‚ streams and drinking water. Aluminum‚ Arsenic‚ Chromium‚ Copper‚ Iron‚ Lead‚ Manganese‚ Nickel‚ Silver‚ and Zinc are all chemical elements. Chromium‚ Copper‚ Iron‚ Manganese‚ Nickel‚ Silver‚ and Zinc which are yellow on the periodic table are considered transitional metals. Aluminum and Lead which are light blue on the periodic table are considered other metals.
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Steel plant blast furnace slag is discharged waste in the production process. At present‚ the slag into the slag powder ground‚ the same amount instead of cement‚ either turning waste into treasure‚ and can reduce production of cement needed for mining resources is an important way to develop recycling economy and achieve sustainable development. Slag powder is a new type of high-strength concrete admixture‚ high-quality cement admixture‚ the raw material is metallurgical industry
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many protective paints and sealants don’t defend against rust. Salt water penetrates the protective layers to corrode the metal. Corrosion in iron Rust on iron is produced in sea water when iron (Fe) comes in contact with oxygen. The reason for this is because when water interacts with iron it conducts a small amount of current that flows through the iron. Salt increases the amount of ions in water allowing it to become a better conductor. The full chemical equation for this process theoretically
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copper sulfate (blue crystals)‚ sodium chloride (salt)‚ and iron. Copper sulfate is a chemical compound which is produced commercially by reacting various copper (II) compounds with sulfuric acid [1]. It generally appears as a bright blue or green crystal [1]. Its chemical formula is CuSo4. Iron is silver-white magnetic metallic and readily rusts in moist air [3]. Its chemical formula is Fe. The chemical reaction was demonstrated by the iron reacting to the copper sulfate.
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aluminium. Iron is the second most common metal in the world and cheaper to extract than aluminium. It is extracted by using a blast furnace. Iron ores such as haematite contain iron oxide‚ the oxygen must be removed which then leaves the iron behind. This reaction is called a reduction reaction. Carbon is more reactiuve than iron so it can displace the iron and join with the oxide 2Fe2O3 + 3C → 4Fe + 3CO2 Above you can see the iron oxide has been separated into iron and carbon dioxide
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Washington‚ D.C.‚ 20044. Gopalan‚ C.‚ Ramasastri‚ B.V. and Balasubramanian‚ S.C.‚ 1996‚ Nutritive value of Indian foods‚ National Institute of Nutrition‚ ICMR‚ Hyderabad. Karva‚ S.L.‚ 2008‚ enrichment of traditional foods with green leafy vegetable for iron security of adolescent girls‚ M.Sc. Thesis‚ UAS‚ Dharwad. Pandey‚ M.‚ Abidi‚ A.B.‚ Singh‚ S. and Singh‚ R. P.‚ 2006‚ Nutritional Evaluation of Leafy Vegetable Paratha‚ J. Hum. Ecol.‚ 19(2): 155-156. Singh‚ S.‚ Punia‚ D. and Khetarpaul‚ N.‚ 2009‚ Nutrient
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a quarter of hemoglobin. Myoglobin has a molecular weight of 18‚ 000. It has a component of a single polypeptide chain folded into 8 α- helical structure‚ 153 amino acids and one heme group attached at the crevice of the molecule. It also contains iron protoporphyrin 9 as its prosthetic group. The single polypeptide chain‚ which is folded into 8 α- helical structure‚ is assigned a letter for each fold. The letters A-H is used to designate the folds in the chain and the spaces between each fold
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