| |Unit Title |: |Chemistry for Engineering | |Year/ Semester |: |Year 1/ Trimester 1 | |Lecturer |: |Dr. Loh Han Chern | |Session |: |201101 | |Date |: |9th – 16th March 2010 | Tutorial No. 2 [Part I: Multiple Choice Questions (each question carries 1 mark)]. Q1. Which is the
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Sustainable Chemistry Terry Collins* Chemistry has an important role to play in achieving a sustainable civilization on Earth. The present economy remains utterly dependent on a massive inward flow of natural resources that includes vast amounts of nonrenewables. This is followed by a reverse flow of economically spent matter back to the ecosphere. Chemical sustainability problems are determined largely by these economy-ecosphere materials flows (see the figure‚ below)‚ which current chemistry education
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Review: Csaba Szalay‚ Ildikó Ábrahám‚ Szilárd Papp‚ Gábor Takács‚ Balázs Lukáts Ágnes Gáti‚ and Zoltán Karádi‚ (2010). Taste reactivity deficit in anorexia nervosa. Psychiatry and Clinical Neurosciences‚ 64: 403–407. Basis for the research question in past research and theory: Hypogeusia‚ the reduced ability to taste‚ and dysgeusia‚ the distortion of the sense of taste‚ mainly involving the sour‚ bitter and salty tastes‚ have already been demonstrated in anorexia nervosa patients in literature
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Chapter 1 Carbon Compounds and Chemical Bonds. (Covered material: 1.1 - 1.8; 1.12 - 1.17) 1. Structural Theory – most fundamental theory of Organic Chemistry (developed independently by A. Kekule‚ A. Couper and A. Butlerov between 1858 and 1861). Organic Compounds – compounds of carbon and hydrogen. Other elements frequently found in organic compounds are: oxygen‚ nitrogen and halogens (F‚ Cl‚ Br‚ I); less frequently found are: sulfur and phosphorus. Review Periodic Table for determining valence
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Toluene (CH3C6H5) (3ml) - Potassium Permanganate solution (KMnO4) .01 mol L-1 (4ml) - Sulfuric Acid (H2SO4) 2mol L-1 (2ml) - Bromine Water (Br2) (5ml) Procedure: Reaction of hydrocarbons with acidified permanganate: 1) Into three separate‚ labeled test tubes place 1 ml of cyclohexane‚ cyclohexene and toluene respectively. 2) In a separate test tube add 4 ml of 0.01mol L-1 KMnO4 to 2 ml of 2mol L-1 H2SO4 3) Add 1 ml of this acidified KMnO4 solution to each of the test tubes containing the
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and its velocity. KE= 1/2mv^2 Heat- is the transfer of energy between two objects. Work- is force acting over a distance Pathway- The way that energy transfer is divided between work and heat and its specific conditions State Function/State Property- refers to a property of a system that depends only on its present state. Constant Volume- Delta E= q + w =q = qv Hess’s Law- in going from a particular set of reactants to a particular set of products‚ the change in enthalpy is the same whether
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A Broken Bond From the moment that the mother feels her child kicking‚ there is a very strong bond developed. In one’s life‚ a strong maternal bond is crucial. In Laura Esquivel’s novel Like Water for Chocolate‚ it seemed liked Mama Elena was unaware of the importance of this relationship. “Unquestionably‚ when it came to dividing‚ dismantling‚ dismembering‚ desolating‚ detaching‚ dispossessing‚ destroying‚ or dominating‚ Mama Elena was a pro.” Mama Elena was destined to ruin Tita’s life.
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When a metallic substance shares electrons with a non-metal substance it forms covalent bonds‚ which make molecules. The metal becomes positively charged atoms‚ which means that the number of electrons is never less than the number of protons. Non-metals become negatively charged atoms‚ and now the number of electrons is more than the number of protons. When atoms share electrons of nonmetals then a covalent bond is formed inside the molecule. Monatomic elements are elements that only contain one type
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M12/4/CHEMI/SP2/ENG/TZ1/XX/M MARKSCHEME May 2012 CHEMISTRY Standard Level Paper 2 13 pages –2– M12/4/CHEMI/SP2/ENG/TZ1/XX/M This markscheme is confidential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IB Cardiff. –3– M12/4/CHEMI/SP2/ENG/TZ1/XX/M General Marking Instructions Assistant Examiners (AEs) will be contacted by
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TIMELESS BOND Title: Timeless Bond Written by: Marie Faye S. Fuertes Chapters: Seven (7) Genre: Family; Friendship; Romance I would love to hear your suggestions and comments ^ - ^ You can message me on mariefayesfuertes.16@gmail.com Prologue: Sho‚ a twelve-year-old boy‚ and his sister Saya‚ seventeen‚ were left alone when their parents died in a business appointment overseas. They were left with billions of
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