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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BENIFICIAL AND ALTERNATIVELY NOT SO BENIFICAL USES OF RADIATION BY: Sanwal Hayat What is radiation? Radiation is away in which energy moves from one place to another for example energy radiates away when a stone dropped in the water in circular waves while sound energy radiates from speakers mouth to listeners ear and heat energy radiates from sun to earth.
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Amoxicillin Amoxicillin is a penicillin antibiotic. It fights bacteria in your body. Amoxicillin is used to treat many different types of infections caused by bacteria‚ such as ear infections‚ bladder infections‚ pneumonia‚ gonorrhea‚ and E. coli or salmonella infection. Amoxicillin is also sometimes used together with another antibiotic called clarithromycin (Biaxin) to treat stomach ulcers caused by Helicobacter pylori infection. This combination is sometimes used with a stomach acid reducer
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TITLE: THE EFFECT OF HEATING DIFFERENT SUBSTANCES INTRODUCTION: In this exercise‚ it was required to observe carefully what happened when certain substances were heated in a burner‚ and to note the appearance of the residue after heating. AIM: To observe the effects of heating different substances. MATERIALS: Hard glass test tubes Powered samples of Lead (II) nitrate Copper (II) sulphate Ammonium chloride Zinc sulphate Basic copper (II) carbonate‚ CuCO3. Cu(OH)2
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18 5. The ion of aluminum is Answer: Al3+. 14. How many valence electrons are in the electron-dot structure of H2O? Answer: The number of valence electrons in H2O is = (2 x 1) + (1 x 6) = 8 electrons. 18. The shape of the carbon tetrachloride molecule is Answer: tetrahedral Quiz 6- 1‚3‚18 1. What coefficient is placed in front of O2 to complete the balancing of the following equation? C5H8 +? O2
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Unit 6: Scenario Tina Adams July 18‚ 2015 Kaplan -CJ345 Supervisory Practices in Criminal Justice Professor: James Washburn Unit 6: Scenario Scenario 1: Bad Behavior? In this scenario Sergeant Officer Stevens is the sergeant on the evening shift and he reported to me the shift lieutenant that two male officers were telling sexually explicit jokes in the hallway with a female dispatcher standing only a few feet away. The sergeant ignored the situation and came and told me about it instead. The
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Stage 2 Chemistry Investigation Folio: Practical – Galvanic Cell Name: YY Names of Partner: ZZ Part A Investigation Design Proposal: Purpose of Experiment: To determine the effect of concentration of reactants on the current produced by a galvanic cell. Hypothesis: The greater the concentration of solution in the two half cells reacting with the two metals to produce current‚ the greater the flow of current will be produced from the galvanic cell. Independent Variable: Concentration
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Chemistry is a central discipline and a very important subject which is very often studied thoroughly in most colleges and universities. Like physics‚ math‚ economics‚ biology‚ or geometry‚ chemistry for many centuries remains a root science for the development of a great deal other theoretical and practical scientific branches and disciplines. Very often‚ chemistry becomes a topic of academic essays‚ term papers‚ research papers‚ reviews‚ and other academic papers. Writing a research paper on
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CLASSIFICATION TESTS A. Acids There are relatively few suitable tests for carboxylic acids. Classification is based mostly upon solubility tests. If the compound is water soluble‚ test the aqueous solution of your compound with pH paper (also check the pH of the original water). If the compound is water-insoluble and it dissolves in 5% (1.5M) sodium hydroxide and 5% NaHCO3 solutions as performed in your solubility tests‚ it can be classified as a carboxylic acid. Establish an equivalence value
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1) How many hydrogen atoms are represented in the formula (CH3)2CH2? 1) _______ A) 8 B) 6 C) 9 D) 5 2) Which has the highest percent mass of Cl? 2) _______ A) C2Cl6 B) CCl4 C) C2Cl4 D) C2Cl2 3) The correct formula for Sodium Nitride is: 3) _______ A) Na3N B) NaNO2 C) NaNO3 D) Na2NO3 4) How many moles of NO3 are there in 6.2g? 4) _______ A) 0.05 B) 10 C) 0.10 D) 384 5) Consider the following equation: 4NH4 + 5O2 → 4 NO + 6H2O How many moles of water
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