Title: Physical and Chemical Properties Purpose: To investigate the physical and chemical properties of pure substances as distinguishing characteristics. Procedure: 1. Set up a well plate with 24 pieces and fill two with either Dilute HCl or Dilute NaOH. 2. Set up four test tubes with any single substance in each one. 3. Observe and record original color and odor of substance. 4. Light flame with matches. -Hold test tube with substance in it over flame with clamps -Observe and record
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9/23/2014 Experiment # 3 Purpose: the purpose of this experiment was to explore the distinctions between physical and chemical properties and between physical and chemical changes. Lab questions: 1. Based on my observation CaCl2 is soluble in water. 2. When 15% of HCl was added to CaCl2 as the teacher was performing the experiment I observed and realized some changes took place physically. It was physical change because the color was clear. 3. By adding 15% of HCl of CaCo3 ‚ made it change chemically
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you observer any chemical changes in this experiment? Yes. CuCo2 turned green when I applied heat to it. B. What evidence did you use to decide that something was a chemical change? I viewed my other test tubes to see if it there was a chemical change in those. C. Give at least two examples of chemical changes you observed. Zn and MgO when I Diluted HCL D. Classify the following properties of sodium metal as physical or chemical: • Silver metallic color: Physical • Turns gray in
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8AGENDADECEMBER 1998 Noam Chomsky on LANGUAGE by Aaron Stark Why should one be interested in studying language? Noam Chomsky’s answer to this question in part characterizes the importance of his linguistic theories to modern thought. In his view‚ to truly study language is to study a part of human nature‚ manifested in the human mind. What does he mean by this? To begin‚ one has to understand what Chomsky thinks the nature of human languages actually is‚ and why it is so interesting
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that are encountered throughout the American wasteland are known as Super Mutants‚ nasty humanoid creatures that are a product of a science experiment gone horribly wrong. The uncanny nature of the Super Mutants‚ paired with their increased aggression and unnatural physical and mental state lead to humans of the wasteland to fear the very mention of the beast‚ regardless of whether the Super Mutant wants to cause physical harm or not Although many creatures across the American Wasteland are the
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Conditional cash transfers (CCTs) refers to a form of funding by the government or other humanitarian agencies whereby the fund donated must be used to finance a predetermined undertaking (Fiszbein et al‚ 2009‚ pp. 31). In Conditional cash transfers‚ money has to be spent for the intended purpose and only those who have been approved to meet the predetermined requirements receive such cash. This means that the recipient of the cash has to be vetted thoroughly and their actions determined before getting
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Cable TV Networks Regulation Act in 1995 was a hurriedly drafted Bill and lacked several important elements. The Cable TV consumer rates have gone up 30-40 per cent whereas the inflation is only about 2 per cent. The Amendment Bill‚ called the Conditional Access System Bill‚ was introduced to keep some check on the regularly escalating cable subscription rates. Though this solution could hardly be called effective‚ at least it gave the government a means to keep tabs on the premium tier. Though the
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objective of this experiment is to differentiate between a physical change and a chemical change. A physical change includes a change in the material without affecting its composition‚ such as the physical state change. However‚ a chemical change includes the change in the composition of the substance. The change in color‚ formation of a gas or a solid product‚ and the production of energy are the evidences of a chemical reaction‚ thus‚ of a chemical change. Materials Crucible tongs Evaporating
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education of the children‚ and the outcomes of the adults’ workforce in the household. Also‚ this program was based on the pioneering conditional cash transfer program of Mexico named Oportunidades. In addition‚ the ONYC conditional cash transfer program greatly benefitted the lower- and middle-income countries. However‚ being the first comprehensive Conditional Cash Transfer Program in a developed country‚ the Family Rewards of the ONYC has been the main focus of other countries. The program is
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Lata Mangeshkar- The Pride of India India‚ one of the highest movie producing countries‚ has many great singers. One such singer‚ who has been singing for the past 60 years is non other then my favourite singer Lata Mangeshkar. Lata Mangeshkar is and has been the most heard voice in all of India for some time now. Lata has been active in all Indian popular and classical music‚ sung film songs‚ ghazals ‚ bhajans and pop (Nagma‚ 2004). Lata’s mesmerizing melodious voice has won fans all over the
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