CHEM XXI Project Report Worksheet (4 pages max.) Experiment title: How Do We Identify an Unknown Substance? Guiding questions: State the question or questions that that you were trying to answer in this lab. How do you determine the two unknown types of plastic? What are the two unknown plastics? Safety considerations: Briefly describe the safety measures you had to take to perform the experiments. Before entering the lab‚ I put on my lab coat and practiced using
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cardboard are all examples of porous evidence. At a crime scene this type of item might be a tissue box‚ pieces of mail‚ business cards‚ pictures‚ books‚ notes‚ and walls with porous types of paint. There are a few different processes available to lift a print from a porous item; it really depends on the condition of the item. Investigators often use chemical methods such as iodine fuming‚ silver nitrate‚ or ninhydrin to locate latent prints on porous materials. When one of these chemicals comes into
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Classifying Chemical Reactions Introduction Pre-lab questions 1. Which reactants used in this experiment are flammable? Discuss the safety precautions that are necessary when working with flammable materials in the lab? 2. Summarize the following description of a chemical reaction in the form of a balanced chemical equation? 3. Common observations of a chemical reaction are described in the introduction section. For each observation‚ name a common or everyday occurrence that must involve a chemical reaction
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ALEXIS STUDENT: LARIZA VALERIA CHONG FLORES KENT CHEMICAL: ORGANIZING FOR INTERNATIONAL GROWTH KENT CHEMICAL: ORGANIZING FOR INTERNATIONAL GROWTH Kent Chemical was a rubber producer which founded in 1917 in Kent‚ Ohio. In the 1940s‚ as turned into the plastics‚ Kent quickly grew to be one of the biggest producers and marketers of plastic additives and other specialty chemicals. Later‚ in the 2000s‚ Kent became a worldwide specialty-chemical company‚ whose products sold in nearly 100 countries
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Chemical Reactions What is a Chemical Reaction? Types of Chemical Reactions Redox Reactions Nonredox Reactions Classifying Reactions What is a Chemical Reaction? A chemical reaction is a process in which the identity of at least one substance changes. A chemical equation represents the total chemical change that occurs in a chemical reaction using symbols and chemical formulas for the substances involved. Reactants are the substances that are changed and products are the substances that are
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Chemical Formula Principles Chemical Formula is a system of chemical notation that was invented in 181 by John Jakob Berzelius. The system is based on the law of definite proportions”‚ states that all samples of a given chemical compound have the same elemental composition. It is also a way of expressing information about the proportions of atoms that constitute a particular chemical compound‚ using a single line of chemical element symbols‚ numbers‚ and sometimes also other symbols‚ such as
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Assignment 5 Sheet Harbour Chemicals Sheet Harbour Chemicals (SHC) manufactures chemicals used in the paint industry. The process involves three departments. Chemical A‚ which is purchased for $3 per liter‚ is processed through Department 1 in batches of 100 liters. Each batch of chemicals processed through Department A produces 70 liters of chemical B and 30 liters of chemical C. Chemical B is sold for $10 per liter. Chemical C is used in Department 2 to produce chemicals D‚ E‚ and F. Department 2
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Chemical Reactions & Equations CHEMICAL REACTION : In a reaction when the original state of the particle changes and it cannot be reversed by simple physical means‚ this type of reaction is known as chemical reaction. Example :- Fermentation of grapes‚ burning of wood etc. In this reaction we have seen that after burning of wood‚ coal is formed and we cannot make wood from coal. PHYSICAL REACTION : In a reaction when original state of the particle can be recovered by any means then this type of
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Student 11/6/12 Branch Essay Chemical Corps Chemical Corps There are many different types of branches in the United States Army. All of them serve important needs to protect the nation’s freedom. The branch that has to do with defending the nation against the threat of chemical‚ biological‚ radiological‚ and nuclear weapons and lies within the Chemical Corps of the United States. This is important because rise of weapons of mass destruction has skyrocketed in the past 15
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suppliers as it was often risky‚ time consuming and expensive * Consulting services are considered a bonus * Want things that make them more money so the more money the make the better it looks for their margins * Customer loyalty is huge in this business * Want a company that offers good service so our locations may a benefit for us Implications: * Cannot use price as a competitive advantage because we have competitors with deeper pockets * Cargill bid could drastically increase
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