UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level CHEMISTRY Paper 1 Multiple Choice May/June 2005 1 hour Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) 5070/01 w w w e tr .X m eP e ap .c rs om READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Write your name‚ Centre number and candidate number on the answer
Premium Oxygen Hydrochloric acid Ammonia
PHYSICAL SCIENCE I. HISTORICAL BACKGROUND A. Babylonians They recorded eclipses and they were able to predict future eclipses. They named the twelve divisions of the Zodiacs‚ divided the northern sky into constellation and gave their present names. Their priest recorded planetary motions especially those of Venus‚ geometry and mathematics were highly developed by these people. There were evidences of multiplication tables and tables of square and cubes. They created standards for measuring length
Premium Energy Temperature Force
1. Prehistoric Times - Beginning of the Christian Era (Black Magic) Existence of Fire Arguably the first chemical reaction used in a controlled manner was fire. However‚ for millennia fire was simply a mystical force that could transform one substance into another while producing heat and light. Fire affected many aspects of early societies. These ranged from the simplest facets of everyday life‚ such as cooking and habitat lighting‚ to more advanced technologies‚ such as pottery‚ bricks‚ and
Premium Chemistry Nitrogen Human
EAS 199A Lecture Notes: Basic Electricity Fall 2011 This course module introduces the basic physical models by which we explain the flow of electricity. The Bohr model of an atom – a nucleus surrounded by shells of electrons traveling in discrete orbits – is presented. Electrical current is described as a flow of electrons. Ohm’s law – the relationship between voltage‚ current and electrical resistance – is introduced. Learning Objectives Understanding the basic principles of electricity is
Premium Atom Electric charge Electron
------------------------------------------------- PASSWORDS * Special Passwords In versus mode‚ enter the following info to get the desired effect: Effect | Password | Boss: High Abbott (appears in invisible box in lower right-hand corner) | J Rubin‚ Jan 6 1970 | Boss: Kull (appears in invisible box in lower right-hand corner) | A Gavin‚ Jun 11 1970 | Character: Black Dragon | Eyvern‚ March 9‚ 1927 | Character: Gulab Jamun | Gulab‚ February 29‚ 1900 | Character: Major Trouble |
Free Chemistry
ySmoking and young people http://www.leedscommunityhealthcare.nhs.uk/what_we_do/specialist_services1/stop_smoking_service1/smoking_and_young_people/ A STRIKING approach for young people in Leeds! Striking is a tobacco prevention / cessation package for young people in Leeds which has been piloted and evaluated in three secondary schools. Striking aims to prevent the uptake and reduce smoking prevalence in young people across Leeds‚ increase knowledge and skills and support young people to make
Free Tobacco Smoking Nicotine
General Studies Unit Kaduna State University‚ Kaduna Kaduna State‚ Nigeria GST 203 HISTORY AND PHILOSOPHY OF SCIENCE LECTURE NOTES COURSE INTRODUCTION: This course is designed with the objectives of not only educating students on the historical developments that have taken place in the fields of science and technology and the philosophical basis on which achievements were made but to stimulate discuss and interests in the minds of students irrespective of the course they offer in the
Premium Scientific method Pollution Evolution
Office Use Only | | | | | | | | | | | | Monash University Semester Two Examination Period 2010 Faculty Of Science EXAM CODES: CHM1022 TITLE OF PAPER: CHEMISTRY EXAM DURATION: 3 hours writing time READING
Premium Chemical equilibrium Rate equation Reaction rate
6 years | 511.0‚ 1274.5 | Zinc-65 | 304510 TBq/Kg (8230 Ci/g) | 244 days | 511.0‚ 1115.5 | Tritium (Hydrogen-3) | 357050 TBq/Kg (9650 Ci/g) | 12.32 years | 5.7 (average) | Alpha emission only Isotope | Activity | Half-life | Energies (KeV) | Polonium-210 | 166500 TBq/Kg (4500 Ci/g) | 138 days | 5304.5 | Isotope | Activity | Half-life | Radiation types | Energies (KeV) | Caesium-137 | 3256 TBq/Kg (88 Ci/g) | 30.1 years | Gamma & beta | G: 32‚ 661.6 B: 511.6‚ 1173.2 |
Premium Ionizing radiation Radioactive decay Isotope
Table of Contents Components of cigarette smoke 2 Effects of EACH component of Cigarette Smoke on the Human Body 4 Secondhand Smoke 11 The effects of smoking on pregnancy 14 Four ways the government sought to decrease the effect of smoking 17 Should smoking be banned and Why 18 References 20 Components of cigarette smoke One well-known fact about cigarettes is that a single cigarette contains over 4‚000 chemicals. And of course‚ many of these chemicals are actually toxic
Free Tobacco Smoking Nicotine