worksheet focuses on the most basic chemicals and nomenclature systems. Please read the information concerning each problem set and then attempt the problems associated with that information. The simplest compounds contain just two elements. Sodium chloride‚ NaCl‚ is an example of a binary compound. Several other examples are listed below. Potassium bromide KBr Calcium bromide CaBr2 Lithium fluoride LiF Lithium oxide Li2O When naming binary compounds follow these rules: 1. the element with
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Keghan Chapter 8 MULTIPLE CHOICE QUESTIONS Topic: Structure Elucidation 1. An alkene adds hydrogen in the presence of a catalyst to give 3‚4-dimethylhexane. Ozonolysis of the alkene followed by treatment with zinc and acetic acid gives a single organic product. The structure of the alkene is: CH3 A) CH3CH=C-CHCH2CH3 (cis or trans) CH3 CH3 B) CH3CH2C=CCH3 (cis or trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E) CH3CH2CHCHCH=CH2
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compared to the Trans isomers‚ Trans isomers have a higher melting point compared to the Cis isomers‚ and Trans molecules are well packed than the Cis molecules. In this experiment‚ the cobalt (II) chloride hexahydrate is reacted with ethlenediamine (NH2CH2CH2NH2) to form [Co(en)2(H2O)2]Cl. Then hydrogen peroxide is added that changes the charge of cobalt from II to III. Finally‚ the HCl is added to the solution‚ that forms [Co(en)2Cl2]Cl. Trans isomer of [Co(en)2Cl2]Cl forms green color‚ and cis isomers
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Chemistry •Matter • • • States Properties Classification Chemistry is the study of the composition‚ properties and structure of matter. it is considered “the central science”; blending at one extreme into physics‚ mathematics‚ engineering and sometimes into earth and life Chemistry Is the study of the matter‚ its classification‚ composition‚ properties and structure; the changes it undergoes‚ the energy transformation that goes with the change‚ and the laws and principles governing such changes
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similar number of carbon atoms and physical properties. The uses of the fractions depend on their physical and chemical properties. www.igcse.at.ua Hydrocarbon molecules are only made of a chemical combination of carbon and hydrogen atoms. They are compounds because they consist of atoms of atleast two different elements. THE FRACTIONAL DISTILLATION OF CRUDE OIL www.igcse.at.ua Crude oil is a complex mixture of mainly hydrocarbon compound molecules
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1 Ethene may be converted into poly(ethene). What type of reaction is this? (A) Condensation (B) Hydrolysis (C) Oxidation/reduction (D) Polymerisation 2001:1 1 2 You have carried out a first-hand investigation to compare the reactivity of an alkene with its corresponding alkane. (a) State the name of the alkene. 2002:16(a) 1 (b) Outline a procedure to compare the reactivity of this alkene with its corresponding alkane. 2002:16(b) 2 (c) Describe the
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temperature‚ small chips‚ dilute acid ? large chips‚ concentrated acid‚ low temperature ? low temperature‚ small chips‚ dilute acid Image50.gifImage51.gifImage52.gifSodium thiosulphate solution reacts with hydrochloric acid to form sodium chloride‚ sulphur dioxide‚ sulphur and water. The reaction can be followed by measuring the time it takes for enough of the sulphur precipitate to form to obscure a black cross marked on white paper. Which will decrease the time it takes for the black cross
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *1144188971* COMBINED SCIENCE Paper 2 (Core) 0653/21 October/November 2010 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs‚ tables or rough working
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Chemistry- 1. It is a science that deals with the study of Carbon compounds but not all compounds containing under organic compounds. Non-Organic Compounds a. CO- Carbon monoxide b. CO2- Carbon dioxide c. CO3- Carbonates d. HCO3- Hydrogen carbonates e. CN- -Cyanides 2. There are over millions of compounds and inorganic is approximately 100‚000. 3. A science that deals with matter obtained from natural or living sources. 4. Study of Carbon Compounds. 5. According to a combustion
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bonds‚ nonpolar polar covalent bonds‚ polar covalent bonds‚ hydrogen bonds‚ and ionic bonds‚ noting their relative strengths and how and where they form. 2.9 Explain the significance of chemical reactions. Identify the reactants and products of photosynthesis. Water’s Life-Supporting Properties 2.10–2.13 Describe the special properties of water that make it vital to living systems. Explain how these properties are related to hydrogen bonding. 2.10 Define and distinguish between cohesion‚
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