Sample D –TEACHER INSTRUCTIONS I.B. CHEMISTRY : PRACTICAL ELECTROCHEMISTRY INVESTIGATION : INVESTIGATE THE RATE OF ELECTROPLATING A METAL D DCP CE Goggles and Lab coats must be worn Background Students had been taught ‘Electrochemistry’ as outlined in the IB Chemistry syllabus. Investigation Design an experiment that allows you to investigate a variable affecting the rate of electroplating. Your research question must be focussed and specific and must enable you to carry out your experiment safely
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Plants in Temperature An Investigatory Project Presented To the High School Department of the New Jerusalem School In Partial Fulfilment of the Requirements in
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oxygen and sulfur. This substance cannot be a(n) Your Answer: | element. | | | An element cannot be broken down into other elements. | | 2. | | Pick the chemical change that occurs when a lit match is held under a piece of metal. Your Answer: | match burns | | | Chemical changes‚ which release heat and light‚ occur during the combustion process. | | 3. | | Which identification is incorrect for the elements listed? Your Answer: | Zn‚ zirconium | | | Zn is zinc; Zr is zirconium
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Industrial Revolution Industrial Revolution The general working conditions in northeastern factories was sad‚ they was very dangerous and not safe in any way. Corruption and abuse was frequent also in working conditions and very few workers worked their way to poverty‚ it seemed impossible to so with the way things were going. Workers were doomed to repeat dull repetitive tasks every single day‚ day after day and there were no labor laws. Child labor was common and for a worker that was
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The industrial revolution changed the way products were made tremendously‚ Items were made fast and cheap unlike before Textile mills‚ it use to take a while. The Mills were located by waterfalls and fast moving bodies of water‚ with They soon made turbines which replaced water wheels‚ Iron bevel gears were used to transfer energy. Leather belts connected the power to the machinery‚ water had the ability to power an entire mill. 40% of the mills were children as young as 4 years old. The first step
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experiment‚ a coffee cup calorimeter was used to measure the temperature readings of a neutralization reaction and magnesium oxide‚ MgO. Calorimetry is used to measure amounts of heat transferred to or from a substance.2 The difference of temperatures was used to calculate the heat energy given off by each sub-reaction. These values were solved by using Hess’s Law which determined the overall enthalpy changes of the neutralization reaction and MgO formation. Hess’s Law states that the heat evolved
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Investigate a Social Issue Eulis Rhodes Tiffani Davis SOC 100 December 9‚ 2013 The social issue that I am interested in is Domestic Violence. Domestic violence is a pattern of abusive and threatening behaviors that may include physical‚ emotional‚ economic and sexual violence as well as intimidation‚ isolation and coercion. The purpose of domestic violence is to establish and exert power and control over another; men most often use it against their intimate partners
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PUTTING IT TOGETHER: Classifying Chemical Reactions Purpose: To observe and differentiate between the four different types of chemical reactions. Variables: The independent variables are the sodium chloride‚ sodium carbonate‚ magnesium‚copper‚ copper (11) sulfate‚ silver nitrate‚ oxygen‚ lead(11) nitrate‚ sodium carbonate‚ copper (11) sulfate pentahydrate. The dependent variables are the chemical reactions that are being looked for. For example decomposition‚ synthesis‚ single displacement or double
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Chemistry Internal Assessment 2011 Candy Au Introduction The reaction between zinc and copper (II) sulphate is endothermic. If an excess of zinc powder is added to a measured amount of aqueous copper (II) sulphate in a calorimeter and the temperature change is recorded over a period of time‚ the enthalpy change of the reaction can be experimentally determined. Assumption 1. Mass of H2O in 100cm3 of CuSO4 solution is 100g 2. Specific heat of solution is 4.18 kJ kg-1 K-1 which is the
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INVESTIGATE BEFORE INVESTING Guidance for Prospective Franchisees By Lewis G. Rudnick Rudnick & Wolfe Chicago‚ Illinois and H. Bret Lowell Brownstein Zeidman and Lore Washington‚ D.C. INTERNATIONAL FRANCHISE ASSOCIATION 1350 New York Avenue‚ N.W.‚ Suite 900‚ Washington‚ D.C. 20005-4709 Reprinted 2002 REVISED - JULY‚ 1992 WASH1\4838466.1 CONTENTS The International Franchise Association IFA Code of Ethics What Is Franchising? Protect Yourself - Watch For The Warning Signals Evaluating
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