MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
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Experiment 1: Errors‚ Uncertainties and Measurements Laboratory Report Abstract The success of an experiment greatly depends on how the group is able to execute it and how precise and accurate their results are. In this matter‚ errors and uncertainties in measurements are of great factor. In this experiment‚ the group was able to classify the causes of such errors and which measuring device is more precise and accurate than the other. These were obtained by measuring the diameter of an iron sphere
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Nanotechnology | Colour of Gold | Practical Investigation Report | | Introduction Gold is a precious metal which has been used for years and when we think of gold we think of shining bars in a bank vault‚ coins or beautiful jewellery. When we think of gold it’s usually a shining yellow gold however can come in many colours. The colour of gold can range from red through the visible spectrum to purple and violet. Aim The whole point of this experiment was to create gold that wasn’t
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An Iranian General believes they are being set up‚ maybe by Israel. They struggle with deciding to attack first or not. CNN covers the attacks‚ but makes a decision to report only cleared information. The US finds evidence of a chemical lab in Iran. Sarah fears that Muller will take the world down with the “Samson Option‚” a last resort‚ nuclear attack. Sarah contacts KING HASSAN of Jordan for information and evidence
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Special Report Plastic Additive: A Techno-Commercial Profile B.G. SAMPAT E-mail: bgsampat@bom3.vsnl.net.in INTRODUCTION Every activity in modern life is influenced by plastics and many depend entirely on plastic products. All these plastic products are made from the essential polymer mixed with a complex blend of materials known collectively as additives. Without additives‚ plastics would not work‚ but with them they can be made safer‚ cleaner‚ tougher and more colourful. Additives cost money
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Laboratory Apparatus Beakers are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations. Bunsen burners are sources of heat. Burets are for addition of a precise volume of liquid. The volume of liquid added can be determined to the nearest 0.01 mL with practice. Clay triangles are placed on a ring attached to a ring stand as a support for a funnel‚ crucible‚ or evaporating dish.
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Safety in Laboratory Working safely is one of the first things should learn because the safe way is usually the correct and most efficient way moreover Safety is everyone’s business and responsibility . Safety in a machine shop may be divided into two broad categories: Those practices that will prevent injury to workers. Those practices that will prevent damage to machines and tools. How do you work safely:
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Flame Test Lab Period 2 Due: 10/19/11 Honors Chemistry Purpose/Objective: To observe the colors produced when elements are put into a flame and to prove when electrons jump down from higher layers they release energy in the form of light. Materials: CoCl2 Na2SO4 CaCl2 KCl SrCl2 CuCl2 LiCl Unknown A Unknown B Distilled H2O Q-tips Beaker Bunsen Burner Spectroscope Spot Plate Procedure: 1. Light the Bunsen Burner. 2. Fill a beaker
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Carboxylic Acids and Their Derivatives Ma. Marielle M. Medura Prof. Emma Boncales Chem 23A (TTH 01:00-4:00 p.m) Carboxylic Acids and Their Derivatives I. Introduction Carboxylic acids is an organic compound that contains a carboxylic group(-COOH). Its general formula is R-C=OOH with R referring to the rest of the molecule such as H and C. They are directly attached to a carbonyl group and the interaction between them affects the reactions of each. The polarity of the O-H bond
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Anionic | Na3PO4 | Orange-red | 3 | Cationic | K2SO4 | Green | 7 | Neither | KBr | Green | 8 | Anionic | (NH4)2C2O4 | Green | 8 | Anionic | NH4CH3COO | Blue green | 9 | Anionic | (NH4)2CO3 | Blue green | 9 | Anionic | Solution | Color of Univ Indicator | pH | Type of reaction | K2HPO4 | Orange yellow | 6 | Further ionization | KH2PO4 | Blue green | 9 | Anionic hydrolysis |
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