catalase has been raised because more particles have been exposed to the other reactant, which lead to a higher rate of collision between the particles of reactants. Thus, there’s a higher chance to gain the activation energy in order to carry out chemical reaction. Rate of reaction increased. Catalase was a biological catalyst (enzyme) which made of protein and will denature in high temperature due to the breakage of bond between molecule. In this case, boiling the liver will cause the enzyme inside
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division of DuPont that produced paint for the auto and trucking industries. From the beginning of Kullman’s term as CEO in January 2009, she sought to transition the Company from an economically struggling commodity chemical business (with a 2009 stock price below $19) to a specialty chemical and science-driven business (Exhibit ). Kullman believed DuPont was best positioned for a future at the core of industrial biotechnology by competing in agriculture, nutrition, and advanced materials, areas with
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Molecular Structures Molecular Structures Learning Objectives: - Understand covalent bonding displayed by elements in biological systems - Apply the octet rule - Practice converting molecular formulas into molecular structures - Be able to visualize and draw three dimensional molecular shapes Introduction: The octet rule states that most elements will share or exchange valence electrons in order to achieve a similar electron arrangement to the nearest noble gas. This concept is extremely
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material for Automotive and Commercial Vehicle coatings. o Raw material for Industrial coatings. 2. Our Customers • Our customers in nearly all sectors and almost every country in the world. Our portfolio is organized into five segments: Chemicals, Performance Products, Functional Materials & Solutions, Agricultural Solutions and Oil & Gas. 3. Our Purpose and Goals • Why- our Purpose o We combine economic success, social responsibility and environmental protection. Through science and
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Chemistry Mid-term Exam Version 2/23/15 Name: Student number: Directions: It is important that you provide answers in your own words. Please focus only on information from the text/eBook to create your own solutions. Please do not use direct information from an outside source (especially copying and pasting from an “answer” website). Use of direct information from an outside source is against school policy. All answers will be checked for plagiarism. Instances of plagiarism can result in
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Part A. 2. Record your observations in a table. 3. Dispose of the contents of the well plate as directed by your teacher. Clean your workstation and wash your hands. Observations: Reactants | Physical Properties | Results | Physical/Chemical Changes | Copper (II) sulfate | Blue, clear, liquid | N/A | N/A |
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Naturally occurring metals Copper, silver, gold and platinum are the four most un-reactive metals. This means that they do not form compounds and can exist as simple lumps of the metal in the rock. They can be found native. These are easy to extract since they can be mined. Also, you can even find pieces of gold in streams. More reactive metals are not found in lumps and must be extracted from the rocks in which they occur. Roasting in oxygen For all this extraction processes, the rock must
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Written Assignment 1: Intermolecular Forces and Liquids and Solids Answer all assigned questions and problems, and show all work. 1. Explain and give an example for each type of intermolecular force. A: a. Dipole-dipole interaction: a dipole-dipole interaction is the electrostatic attraction between the positive end of one polar molecule and the negative end of the other. Dipole-dipole attraction occurs between molecules which are permanent dipoles (polar covalent molecules). An example
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the magnifying power of the most powerful optical microscope in the world, we would still not be able to see an atom. 4. Chemical compounds are made up of about 100 distinct elements. Atoms are the smallest subdivision of matter that still retains chemical properties of a substance. A quark is the smallest particle that exists. Electrons form atoms that in turn determine chemical properties of a substance. 5. The number of protons makes an element distinct. 6. Brownian motion has to do with random
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Purity of a substance report Create a report describing the factors that influence the purity of a substance. It is important that chemical substances are as pure as possible. This reduces the chances of unnecessary side-effects and helps ensure an accurate dose in each tablet/substance. The purity of a substance or compound can be established by using data from its melting point or boiling point and from thin layer chromatography. Impure compounds have a range of melting and boiling points, as
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