Crystal “X” was added to Liquid “Y”‚ but when they were mixed it turned from green to blue? 3. Why did the metal foil turn brownish red once added to Crystal “X” and Liquid “Y” solution? 4. Were Liquid “X” and Liquid “Y” the same liquid? 5.What chemical reaction happened that made vapor during the combination of metal foil and Liquid “Z”? 6. What made the liquid turn darker in the combination of metal foil and Crystal “X” and Liquid “Y” solution? 7. What made up Crystal “X”? 8. Is Crystal “X”
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Characteristics of both bonds: * Occur between 2 atoms * Composed of 2 electrons * Have both ionic and covalent characteristics * Together = 100% * Both bonds are measured on an electronegativity scale * Both contain a nonmetal * Chemical bonds * Are determined by using the “magic number” (1.67) * Have bond angle and bond axis Characteristics of metallic bonds: * In metals (d-block electrons only..because of shape and prop.) * They’re delocalized (no electron ‘belongs’
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earnings‚ he married Elizabeth Reyes‚ a nurse and a certified public accountant and they have been blessed with 5 children. After 5 years of combing the Central Luzon region‚ in 1978‚ David established a company called Generoso Pharmaceuticals and Chemicals (GPC) with Elizabeth and a business associate Mr. Rafael Buenaventura‚ the team set up shop at the Generoso residence in Tarlac. They have an initial capitalization of P300 with a dozen bottles from the pharmaceutical firms which they had been connected
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Chemical Equilibrium Lab Report Aim: The aim of the lab “Chemical Equilibrium” is to observe the effects of changes in concentrations of products and reactants on the position of the equilibrium of given chemical reactions. Background Information: We are going to use our knowledge of the Le Chatelier’s principle in order to observe this experiment. The principle states that the equilibrium will shift in the direction that will minimize the effects of the change. This lab consists of two
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Mass Relationships in a Chemical Reaction – Lab Christian Lecce Mr. Ribarich Wednesday‚ February 20st‚ 2013 Purpose To determine the mass of copper formed when excess aluminum is reacted with a given mass of a copper salt (Copper Chloride dihydrate)‚ and the mole-to-mole ratio between the reactant and the product of a chemical reaction. Apparatus * 150ml beaker * Stirring rod * Ruler * Hotplate * Tweezers * 50ml graduated cylinder Materials * Copper
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Chemical Reaction of copper compounds Introduction: In this experiment‚ the objective was to conduct a series of chemical reactions that contain copper or copper compounds. That is to say that the products of each chemical reaction were used in the next reaction. The process starts with a solid copper wire dissolved in nitric acid and the end product is copper powder. The product which was used from the previous reaction is the limiting. In the initial step‚ the solid copper is the limiting reactant
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52 Chemical Bonding and Molecular Structure 53 I. Structure of Matter (20%) B. Chemical bonding 1. Binding forces a. Types: ionic‚ covalent‚ metallic‚ hydrogen bonding‚ van der Waals (including London dispersion forces) c. Polarity of bonds‚ electronegativities 2. Molecular models a. Lewis structures TYPES OF CHEMICAL BONDING Ionic Bonding - two atoms of opposite charge electrically attracted to one another Covalent Bonding - two atoms each sharing electrons within a molecular orbital Metallic
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Case (2) NEW WORLD CHEMICALS INC Financial Forecasting Sue Wilson‚ the new financial manager of New World Chemicals (NWC)‚ a California producer of specialized chemicals for use in fruit orchards‚ must prepare a financial forecast for 1998. NWC ’s 1997 sales were $2 billion‚ and the marketing department is forecasting a 25 percent increase for 1998. Wilson thinks the company was operating at full capacity in 1997‚ but she is not sure about this. The 1997 financial statements‚ plus some other data
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Chemical Composition of Natural Gas Natural gas is a naturally occurring gas mixture‚ consisting mainly of methane. While most of the gas supplied to Union Gas is from western Canada‚ some gas is supplied from other sources‚ including the United States and Ontario producers. While the gas from these sources has a similar analysis‚ it is not entirely the same. The table below outlines the typical components of natural gas on the Union Gas system and the typical ranges for these values (allowing for
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UNITY OF LIFE; ESSAY a) Describe the chemical structure of human haemoglobin (including diagram) b) Over the hundred variant of haemoglobin (caused by genetics mutation) have been describe to date‚ select one variant found in human (e.g Hb s) discuss the prognosis of named disorder The major purpose of moving a fluid in the body is provide a mass transportation over a distance where diffusion is inadequate or too slow.(Knut Schmidt-Nielsen‚ 1997‚ 5th edition)‚ in term of but the
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