2 Preliminary Examination CHEMISTRY 9647/03 Higher 2 13 September 2010 Paper 3 Free Response 2 hours Candidates answer on separate paper. Additional Materials: Answer paper‚ Graph Paper‚ Data Booklet READ THESE INSTRUCTIONS FIRST Write your name and civics group on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or
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FACULTY OF RESOURCE SCIENCE AND TECHNOLOGY DEPARTMENT OF CHEMISTRY STK 1094 – Analytical Chemistry 1 EXPERIMENT NO : 1 TITLE OF EXPERIMENT : ACID – BASE TITRATIONS DATE OF EXPERIMENT : 27 SEPTEMBER 2013 GROUP MEMBERS & MATRIX NUMBERS : 1. DELVINO DISONNEO ANAK DALIN (44903) 2. GOH CHIA HONG (44927) 3.LINDA CHONG (41889) 4.LIM WHYE KIT LEONARD(41874) 5. LAB FACILITATOR : REPORT DUE DATE : 4 OCTOBER 2013 INTRODUCTION The laboratory
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What are the megatrends which will shape our world Megatrends Introduction With population growth and economic improvement‚ human beings are naturally increasing their demand towards happiness. The current trend to pursue happiness (demand to consume resources) generates the global demand in the world. Sustainability is crucial behind this trend. Our the only planet with limited resources may not be affordable to feed all people living on earth If our population continues to grow and personal
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The chemistry of hairspray What is hairspray: introduction Hair spray (or hair lacquer) is a common household aqueous solution that is used to keep hair stiff or in a certain style. Weaker than hair gel‚ hair wax‚ or glue‚ it is sprayed to hold styles for a short period of time. Using a pump or aerosol spray nozzle it sprays evenly over the hair. Hairspray was first developed and manufactured in 1948 by Chase Products Company‚ based in Broadview‚ Illinois.Its active ingredient is a suitable
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would we be if our body did not consist of bones? A big blob? A thin figure? Bones are very vital to our body. It is what builds us up. Bones all together makes our skeleton. It is very important that we know about and take care of our bodies. Our bones give us our distinct body shape along with supporting and protecting our organs and systems. The bones that make up our skeletons are all very much alive‚ growing and changing all the time like other parts of our body. Even though our bones are alive
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ACKNOWLEGEMENTS ACKNOWLEGEMENTS First of all I would like to thank my chemistry teacher Ms. Shyamala for providing adequate information which was a great helping hand from her .I would like to thank my parents. Even their support was an immense assistance. First of all I would like to thank my chemistry teacher Ms. Shyamala for providing adequate information which was a great helping hand from her .I would like to thank my parents. Even their support was an immense assistance. Certificate
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CARIBBEAN EXAMINATIONS COUNCIL Caribbean Advanced Proficiency Examination CAPE ® CHEMISTRY SYLLABUS Unit 1 - effective for examinations from May/June 2007 Unit 2 - effective for examinations from May/June 2008 CXC A11/U2/06 Published by the Caribbean Examinations Council All rights reserved. No part of this publication may be reproduced‚ stored in a retrieval system‚ or transmitted in any form‚ or by any means electronic‚ photocopying‚ recording or otherwise without prior permission
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or orange-brown) * 1.5g of Cobalt(III)penta-amine‚ chloride was dissolved into a 15mL of water with ammonia (5mL) on a 100mL beaker. * The complex solution was boiled completely‚ filtered‚ cooled and acidify with diluted HCl‚ (orange litmus paper was used). * NaNO2 (2g) was added and heat to the solution until the red precipitation get dissolve. * The solution was cooled and concentrated HCl (20mL) was added carefully. * The solution was cooled and the yellow or orange-brown crystals
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Molly Hubner Period 1 Extra Credit Paper Chemistry of Cancer Cancerous cells develop when conditions for cells are favorable‚ therefore following the divisions to continually occur‚ never stopping. When this happens‚ a tissue mass of cells called a tumor is formed and does not respond to normal controls regarding cell growth. Cancer cells have the following characteristics: profound changes in the plasma and membrane cytoplasm
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How maps influence our perception of the world Maps have a great influence on our individual perception of the world. Some people maintain this point of view while others argue with it. As far as I’m concerned‚ I support the first issue. On the one hand‚ many people suppose that maps have a good impact on our perception of how the world works. Firstly‚ they say‚ it helps to form our worldview. And in its turn this is useful for our range of vision‚ development. Secondly
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