determine whether or not a chemical reaction occurred after the mixing of various chemicals. The evolution of a gas‚ the formation of precipitation‚ and the change of temperature or color are all indicative of a chemical reaction. It was assumed that a reaction did not take place if the mixture of chemicals exhibited none of these characteristics. Several precipitation‚ complex-ion formation‚ redox‚ and acid-base reactions were performed. Redox: Decomposition Reactions In a 13 x 100 mm test tube‚ 2 mL
Premium Chemistry Chemical reaction Temperature
Exothermic and Endothermic Reactions The release of energy in chemical reactions occurs when the reactants have higher chemical energy than the products. The chemical energy in a substance is a type of potential energy stored within the substance. This stored chemical potential energy is the heat content or enthalpy of the substance. The collection of substances that is involved in a chemical reaction is referred to as a system and anything else around it is called the surroundings. If the enthalpy
Premium Energy Thermodynamics
Experiment 15 & 16: Preparation of 1-bromobutane‚ an SN2 reaction Preparation of 2-chloro-2-methylbutane‚ an SN1 reaction Introduction The purpose of this experiment is to synthesize 1-bromobutane from 1-butanol and sodium bromide. In order for this reaction to reach completion there are four major operations that need to be performed. The four major operations include refluxing‚ simple distillation‚ separation‚ and drying. To begin‚ in order for the compounds to react they will be dissolved
Premium Chemical reaction Ethanol Metabolism
Action – Reaction B: All right‚ I’ll say: how are you all this day of your time‚ as you know time to exist? AUD: Good. Great. Perfect. B: We will begin with questions. Q: I have a question. We have had a physicist in history -- I believe it was Sir Isaac Newton -- he said for each action there is an equal and opposite reaction. Is that true in your culture? B: All right‚ understand‚ first of all‚ there will be many ideas and interpretations along that line‚ as you understand
Premium Physics Classical mechanics Universe
Bowens Reaction Series Mineral occurrence in igneous rock is most simply explained by Bowen’s reaction series. Norman Levi Bowen discovered the series of reactions while studying the process of crystallizing minerals in Washington‚ D.C. in 1928. In order to best express his findings to his scientific brethren‚ Bowen created a visual display based on when and under what conditions each silicate mineral crystallized. This is extremely important to geologists because it helps them to easily understand
Premium Mineral Granite
Introduction James Weldon Johnson wrote the song entitled‚ “Lift Every Voice and Sing‚”also known as“The Negro National Anthem‚ as a poem in 1900. (The Black National Anthem‚ 2012) This song was first performed in public in Jacksonville‚ FL.‚ as part of a celebration of Abraham Lincoln’s commemorative birthday celebration February 12‚ 1900. This song quickly became a means by which African Americans could demonstrate their patriotism and hope for the future of America. Development This song
Premium African American Black people Music
As a student‚ a teen and a follower of the church‚ I do not agree in the passing of the Reproductive Health Bill in our country. It is because I think the Reproductive Health Bill indirectly decreases the morality of people. It also teaches us how to use condoms or pills for safe sexual intercourse or for family planning. Even though we all know that it does not work 100%‚ there are still some who use it. For me it promotes abortion because they are preventing the development of a child‚ indirectly
Premium Birth control Sex education Ten Commandments
Stress Management It may seem that there’s nothing you can do about your stress level. The bills aren’t going to stop coming‚ there will never be more hours in the day for all your errands‚ and your career or family responsibilities will always be demanding. But you have a lot more control than you might think. In fact‚ the simple realization that you’re in control of your life is the foundation of stress management. Managing stress is all about taking charge: taking charge of your thoughts‚ your
Premium Anxiety Stress A Great Way to Care
�PAGE � COMPARATIVE ANALYSIS OF MUTUAL FUNDS IN GHANA USING BETA AS THE DETERMINANT FACTOR. � LIST OF TABLES Table 2.1 Difference between a Unit Trust and a Mutual Fund Table 2.2 Classification of Collective Investment Schemes in Ghana Table 2.3 Performance of Collective Investment Schemes in Ghana 2010 Table 2.4 Market Share and Performance of Collective Investment Scheme in Ghana 2010 Table 4.1 Various Collective Investment Scheme with No. Shareholders‚ Annualized Returns
Premium Investment Mutual fund Hedge fund
Sous-entendu‚ by Anne Stevenson is a short poem‚ with a powerful message that isn’t quite clear to readers. The title itself is French for‚ “hidden meaning” or “implication”. “It describes something left unsaid but assumed to be understood” (939). It is written from a women’s point of view‚ on how we interpret the way men look at us. The narrator is speaking to men in general‚ not necessarily directing the poem at one specific man. Her words portray an extremely strong and intelligent woman‚
Premium Gender Gender role Transgender