Victorian Certificate of Education 2012 CHEMISTRY Written examination Day Date 2012 Reading time: *.** to *.** (15 minutes) Writing time: *.** to *.** (1 hour 30 minutes) DATA BOOK Directions to students • A question and answer book is provided with this data book. Students are NOT permitted to bring mobile phones and/or any other unauthorised electronic devices into the examination room. © VICTORIAN CURRICULUM AND ASSESSMENT AUTHORITY 2012 2012 CHEM DATA BOOK 2 Table
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Exploring Boiling Points Introduction: Every substance has a unique set of properties that allow us to differentiate between them. These properties are classified as physical properties and chemical properties. Physical properties are those that can be determined or measured without changing the composition or identity of the substance. These properties include color‚ odor‚ taste‚ density‚ melting point‚ boiling point‚ conductivity‚ and hardness. Chemical properties tell us how the substance
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+ OH – Amine acid amine salt Example 1 CH3 – NH2 + HCl → CH3 – NH3 + Cl- Methylamine Methylammonium Example 2 CH3CH2 – NH3 + Cl → CH3CH2NH2 . HCl Ethylammonium Ethylamine Reaction of amine with water – when amines react with water‚ they produce hydroxide ( OH ) R – NH2 + H2O ⇄ R – NH3+ + OH- Amine water Hydroxide Example CH3 – NH2 + H2O ⇄ CH3 – NH3+ + OH- Methylamine methylammonium
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3%. Procedure: Williamson and Masters‚ Pages 330-331. Discussion: CH2Cl-CH2-CH2-CH3 CH2Cl-CH2-CH2-CH3 CH2Cl-CHCl-CH2-CH3 CH2Cl-CHCl-CH2-CH3 CHCl2-CH2-CH2-CH3 CHCl2-CH2-CH2-CH3 Reaction SO2Cl2 + 1-chlorobutane 1‚1-dichlorobutane 1‚2-dichlorobutane CH2Cl-CH2-CH2-CH2Cl CH2Cl-CH2-CH2-CH2Cl CH2Cl-CH2-CHCl-CH3 CH2Cl-CH2-CHCl-CH3 + + 1‚3-dichlorobutane 1‚4-dichlorobutane
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by hydrogen atoms? A) 6 B) 5 C) 4 D) 2 E) 3 1 4) In the reaction of Cl2 with ethane and UV light‚ which of the following reactions would be a chain termination event(s)? I) Cl· + CH3 -CH3 → CH3 -CH2 -Cl + H· II) Cl· + CH3 -CH3 → CH3 -H2 C· + HCl III) Cl· + CH3 -H2 C· → CH3 -CH2 -Cl IV) Cl2 + CH3 -H2 C· → CH3 -CH2 -Cl + Cl· V) Cl2 + UV light → C l· + Cl· A) reactions I and IV B) reaction V C) reactions I and II D) reactions III and IV E) reaction III 5) Which of the following statements is the
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Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) Disregarding stereoisomers‚ how many different enols can the β-diketone CH3 COCH 2 COCH 2 CH3 form? A) 3 B) 1 C) 4 D) 0 E) 2 2) Methylamine reacts with acetophenone to yield the: A) imine. B) enamine. C) acetal. D) amide E) iminium salt. 2) 3) What product results when an aldol is dehydrated? A) β-diketone
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Diploma Programme Chemistry data booklet First examinations 2009 Diploma Programme Chemistry data booklet First published March 2007 Revised edition published September 2008 International Baccalaureate Peterson House‚ Malthouse Avenue‚ Cardiff Gate Cardiff‚ Wales GB CF23 8GL United Kingdom Phone: +44 29 2054 7777 Fax: +44 29 2054 7778 Website: http://www.ibo.org © International Baccalaureate Organization 2008 The International Baccalaureate (IB) offers three high quality and
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Straight Chain Alkanes The general formula for an alkane is CnH2n+2 wheren is the number of carbon atoms in the molecule. There are two ways of writing a condensed structural formula. For example‚ butane may be written as CH3CH2CH2CH3 or CH3(CH2)2CH3. Rules for Naming Alkanes * The parent name of the molecule is determined by the number of carbons in the longest chain. * In the case where two chains have the same number of carbons‚ the parent is the chain with the most substituents.
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-ane ending. An alkane can be recognized by its general formula‚ CnH2n+2‚ where n is the number of carbon atoms in the compound. For example‚ C5H12 has five carbon atoms pentane. Each member of the alkane family differs from the next by a — CH2 — group‚ and all the carbons are connected by single bonds. Example 1: Name the following compounds: a. CH4 b. C2H6 or CH3CH3 c. C3H8 or
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Allison hernandez Yañez Grupo 2 A0141117 3 September 2014 A) Why is Carbon important? What makes Carbon so unique? 1.-Because this element have four valence electrons B) What are macromolecules? What is a monomer? What is a polymer? What is polymerization? 2.- A macromolecule is a very large molecule commonly created by polymerization of smaller subunits. In biochemistry‚ the term is applied to the three conventional biopolymers (nucleic acids‚ proteins‚ and carbohydrates)‚as well as non-polymeric
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