Properties and Reactions of Hydrocarbons Abstract Introduction Hydrocarbons are organic materials that contain only carbon and hydrogen atoms‚ these molecules can be saturated or unsaturated and acyclic‚ cyclic‚ or aromatic. In this experiment we used a variety of methods to examine the physical and chemical properties of hydrocarbons. The first experiment we tested a variety of solvents to see if they dissolved our alkane (Decalin). One would expect that non-polar solvents will dissolve
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Balancing chemical equations 1. Complete the following sentences‚ using the words or groups of words in the box below. You may use some words more than once. |• as small as possible |• decrease |• molecules |• quantities | |• balance |• different |• nature |• rearranging | |• bonds |• equal
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Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl A1 Bubbles immediately formed and started popping (not rapidly). This could be seen more easily with the black paper underneath the well plate B. HCl + BTB C1 Once I added the Bromothymol Blue indicator‚ it turned an orange-like color C. NH3 + BTB E1 The reaction turned dark blue. When Bromothymol Blue reacts with an acid‚ it turned orange‚ and when it reacts with a base‚ the end result is blue. D. HCl
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Determination of a chemical formula: the empirical formula of Magnesium Oxide 1. Purpose: Determine the empirical formula of magnesium oxide from the percent composition (this can found using the Analytical Method and the Synthesis Method). 2. Introduction: In the late eighteenth century‚ combustion has been studied extensively. In fact‚ according to Steven and Susan Zumdahl‚ Antoine Lavoisier‚ a French Chemist‚ performed thousands of combustion experiments and measured masses of every single reactant
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Shelby Brown 8/28/10 Physical and chemical changes lab essay Changes in matter occur every day. There are two types of ways matter can be altered; physically and chemically. Physical changes do not change the composition of the matter while chemical changes occur when one or more substances turn into a completely new substance. Physical changes can be seen through an altering of the substances physical property. A substances physical property is observed and measured without changing
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"My Oedipus Complex" is the story of a young boy named Larry who is forced to confront issues of jealousy and confusion. Larry is forced to confront these issues when his father‚ who he does not know that well‚ comes home from the war. The "Oedipus Complex" is a term coined by Sigmund Freud in which a male develops an excessive love for his mother usually accompanied by a hatred for his father. This is extremely evident throughout the story. "My Oedipus Complex" is the story of a young boy named
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common‚ they all deal with observing animals. And with their observation comes at times interaction. They might "mingle" with these animals. Or the observers would just sit there and do what they are supposed to‚ observe.<br><br>Our race‚ is naturally curious and interested in the unknown. In other words what we do not know or understand we try to understand. We try to understand our surroundings. In doing this‚ we would have gained knowledge. <br><br>In Mowat’s essay‚ "Observing Wolves"‚ Mowat attempts
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Observations of Chemical Changes Experiment 1 Chemistry 111 September 3‚2014 Ashley Mattox Abstract: The purposes of this lab is to observe the reactions of some common chemicals contained in consumer products and observe the macroscopic changes these chemicals undergo. Purpose: The purpose of the lab is to be able to interpret underlying macroscopic changes in terms of the behavior of atoms and molecules and also to learn how to separate mixtures into their component
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changes and colors when mixing two or three chemicals together. The actual experiment itself used twelve different pipits and three chemicals I selected from my house. To begin‚ I first gathered everything‚ including the 96 well plate‚ 24 well plate‚ goggles‚ and gloves along with the observations of chemical changes bag. I set it up all on the the kitchen table that had paper towels on it. Next‚ I made my data table so that I could record my reactions. Third‚ I sat all the pipets in the 24 well
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particular blood chemical. In this study‚ 40 participants were measured over a period of an hour prior to watching a violent show and then immediately after. In the results section‚ the researcher writes: ʺThere was a significant decline in blood concentration from a mean of 13.41 (SD=2.48) to 12.38 (SD=2.69)‚ t(39)=3.38‚ p<.01 (one tailed).ʺ Explain this result (including the underlying logic of the computations) to a person who understands hypothesis testing involving a single sample and a known
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