Module 2: The Scientific Method and Matter The Scientific Method Step 1: Performing Experiments Step 2: Making Observations Step 3: Proposing a Hypothesis Step 4: Confirming the Hypothesis Step 5: Proposing a Scientific Law Scientific Notation It is a mathematical expression in which a number is expressed as N x 10^n where N contains only one nonzero digit to the left of the decimal and n is an integer. Rules for Determining Significant Figures (digits) - All nonzero digits are
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John Abarshi Mr Meinsma Chemistry December 14‚ 2010 Conductivity of Ionic solutions Introduction This lab report is about the conductivity of ionic solutions. In class we have been discussing wether all ionic solutions conduct equally well. If an solvent solution conducts electricity‚ then it must contain ions. So measuring the conductance of solutions can tell you whether the solutes in the solution are dissociated into ions. (Conductivity) Any type of solution‚ even ionic solutions‚ provide
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Chemistry is one branch of knowledge that grew from human curiosity about the world and has played a central role in the development of the modern world. Chemistry is the study of the composition of matter‚ the stuff things are made of‚ and the changes that matter undergoes. Now‚ we may not think chemistry plays such a big role in our life but it perhaps more than any other branch of science has bettered our lives. Almost anything we touch today has benefited from chemical technology‚ and there for
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extremely wicked all at once.” — Juvenal‚ Satires The aim of this essay is a controversial one: to provide evidence in support of the thesis that porn addiction‚ especially when accompanied by compulsive masturbation over a long period‚ alters brain chemistry and can eventually produce brain damage. This is not a conspiracy theory. It is an intellectually defensible thesis for which there is now a growing body of scientific evidence. Perhaps the quickest way to tame and tranquilize an unruly nation
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Support Material Exemplar Starter Pages GCE Chemistry B (Salters) OCR Advanced GCE in Chemistry B (Salters): H435 Unit: F336 Chemistry Individual Investigation This Support Material booklet is designed to accompany the OCR Advanced GCE specification in Chemistry B (Salters) for teaching from September 2008. Contents Contents 2 Support Materials 3 Choice of investigation topic 4 Health and Safety 33 Other forms of support 35 Support Materials These support materials should
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Chemistry Laboratory 6A – Stoichiometric Analysis of an Iron-Copper Single Replacement Reaction Martin Sun Purpose The purposes of this experiment were to: determine the number of moles of iron reacted; determine the number of moles of copper produced; and calculate the ratio of moles of copper to moles of iron. Materials and Methods Materials and methods for this laboratory followed those laid out in Experiment 6A on pages 56-59 of Essential Experiments for Chemistry by Morrison and Scodellaro
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had on the environment. · Evaluate and compare the advantages and disadvantages of different renewable and nonrenewable energy resources including cost‚ environmental effects‚ and availability. Lesson 08.05: Carbon Chemistry · Define and compare inorganic and organic chemistry. · Compare diamonds and graphite in terms of bonding and properties. · Describe the properties of the carbon atom that allow it to form such a wide variety of compounds. · Identify the basic steps in the carbon cycle
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and Transcaucasian countries Armenia 2011 Drug Group ATS ATS Cannabis-type Cannabis-type Cannabis-type Cocaine-type Hallucinogens Non-specified Opioids Opioids Opioids Opioids Opioids Opioids Opioids Opioids Prescursors Prescursors Sedatives and Tranquillizers Substances not under international control Drug Methamphetamine Amphetamine Cannabis oil Marijuana (herb) Hashish (resin) Cocaine salts Non-specified hallucinogens Non-specified Heroin Illicit morphine Opium Opium Prescription opioids Prescription
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Chem 3418 Organic Chemistry Laboratory I Acid Base Review Definition In general‚ an acid is a substance that can donate a proton (H+) and a base is a substance that can accept a proton. Any proton in an organic molecule can potentially be donated. The most acidic proton in a molecule would be donated first. Any lone pair in an organic molecule can act as the proton acceptor. An acid (HA) reacts with a base (in this case H2O) to form the conjugate base of the acid (A-) and the conjugate acid of the
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allacademic.com/meta/p94999_index.html “Sentencing disparity: Crack Cocaine v Powdered Cocaine.” The Defenders Online. 27 May 2009. 16 Dec. 2009. http://www.thedefendersonline.com/2009/05/27/sentencing-disparity-crack-cocaine-v-powder-cocaine/ Sullivan‚ Kathleen M. and Gerald Gunther. Constitutional Law: 16th Ed. New York: Foundation Press‚ 2007. The Sentencing Project: Research and Advocacy for Reform. “Federal Crack Cocaine Sentencing.” 13 December 2009. http://www.sentencingproject.org/doc/publications/dp_crack_sentencing
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