is also known as metallic sound. This is the cause that metal wires are used in making musical instruments. Conduction:- Metals are good conductor of heat and electricity. This is the cause that electric wires are made of metals like copper and aluminium. Malleability:- Metals are malleable. This means metals can be beaten into thin sheet. Because of this property iron is used in making big ships. Ductility:- Metals are ductile. This means metals can be drawn into thin wire. Because of this property
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kirsty jones 32251 8151 Edexcel GCSE Chemistry/Science Unit C1: Chemistry in our World Foundation Tier Sample Assessment Material Time: 1 hour You do not need any other materials. Paper Reference 5CH1F/01 Total Marks Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name‚ centre number and candidate number. Answer all questions. Answer the questions in the spaces provided – there may be more space than you need. Information The total mark for
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scrap steel additions‚ or they were added in the production process for a specific purpose‚ e.g. deoxidization by means of silicon or aluminium. Hence they are called residual elements to distinguish them from alloying elements that are deliberately added according to specified minimum amounts. The term “cleanliness” refers to the amounts of various phases such as oxides‚ sulphides and silicates that can be present in steel. The smaller the amount of these phases‚ the cleaner the steel. For many years
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uk/schools/gcsebitesize/science/add_aqa_pre_2011/atomic/differentsubrev5.shtml Brooks‚ W Clark‚ J. (2005). Copper. Retrieved from Chem Guide: http://www.chemguide.co.uk/inorganic/extraction/copper.html Creamer‚ K Davyson‚ S. (2002). Aluminium. Retrieved from Aluminium: http://sam.davyson.com/as/physics/aluminium/site/ Macmillan Mazur‚ L. (2007). Chemical Elements. Retrieved March 19‚ 2013‚ from Chemistry Explained: http://www.chemistryexplained.com/elements/C-K/Gold.html Prices‚ C TMS‚ A. (2013). Bir Umm Fawakhir: Insights
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Chemistry Notes Oxides Oxides are used to determine whether an element is a metal or a non-metal. Most non-metals are classed as acidic oxides. While most metals are classed as basicoxides. Acidic Oxides * Reacts with water to form acids * Neutralises alkaline solution to form salt + water Basic Oxides * Neutralises acidic solutions to form salt + water Amphoeteric Oxides * These are non-metals which display both acidic and basic properties Alkaline Oxides * Reacts with
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laterite brickstones at Angadipuram‚ Kerala‚ India‚ which commemorates where laterite was first described and discussed by Dr. Buchanan-Hamilton in 1807. Laterites are soil types rich in iron and aluminium‚ formed in hot and wet tropical areas. Nearly all laterites are rusty-red because of iron oxides. They develop by intensive and long-lasting weathering of the underlying parent rock. Tropical weathering (laterization) is a prolonged process of chemical weathering which produces a wide variety
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routes of exposure and is also a lung irritant. To avoid harm and ensure safety‚ eye protection and skin protection must be used. Equipment: * Metal tongs * Bunsen Burner * Zinc * Lead * Magnesium * Iron * Tin * Aluminium * Copper * Splint * 50 Ml Hydrochloric acid solution * 8 Test tubes * Measuring Cylinder * Beaker Method: Part A: Reaction of Metals with Oxygen 1. Hold each metal under a Bunsen flame and wait until the metal becomes
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Electrolysis Electrolysis is the process by which ionic substances are broken down into simpler substances using electricity. During electrolysis‚ metals and gases may form at the electrodes. What is electrolysis? Ionic substances contain charged particles called ions. For example‚ lead bromide contains positively charged lead ions and negatively charged bromide ions. Electrolysis is the process by which ionic substances are decomposed (broken down) into simpler substances when an electric
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Workbook Results: Element Observations Element Observations Metal or Non-Metal Sodium -Lustrous -Forms oxides on surface rapidly -A soft metal -silvery-white colour Metal Magnesium -Lustrous -Forms oxides on surface -Silvery-white colour -Malleable but less than alkali metals Metal Aluminium -Silvery-white metal -Malleable but less than alkali earth metals -Forms oxide on surface Metal by observation‚ metalloid by properties Sulphur -Soft pale-yellow powder -It is odourless
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Origins of the Name The word‚ Aluminium originates from the ancient Latin word for alum‚ alumen‚ which is potassium aluminum sulfate‚ meaning “bitter salt”. We pronounce the element of aluminium’s name as follows‚ al-yuh-min-ee-uhm‚ which conforms to the IUPAC pronunciation of the word‚ with the regular ‘ium’ ending of majority of the elements of the periodic table. The History Aluminium was first discovered in 1825‚ by early discoverer‚ Hans Christian Oersted in Denmark. Before this time‚ alum
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