Revision checklist for IGCSE Chemistry 0620 A guide for Students Revision checklist for IGCSE Chemistry 0620 A guide for students How to use this guide The guide describes what you need to know about your IGSCE Chemistry examination. It will help you to plan your revision programme for the theory examinations and will explain what the examiners are looking for in the answers you write. It can also be used to help you to revise by using tick boxes in Section 3‚ ‘What you need to know’‚ to check
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Chemistry of Bath Bombs Date: 16th May 2014 Introduction – When sodium bicarbonate and citric acid mix in water they dissolve‚ the sodium bicarbonate reacts with the citric acid to form sodium citrate and carbon dioxide. The carbon dioxide then bubbles out as a gas‚ which makes the bath bomb break up‚ in this experiment 3 tests will be conducted in order to find the correct ratio of bicarbonate soda and citric acid to create the
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Organic Chemistry Experiment - Hydrocarbons Thursday‚ April 12‚ 2007 1:34 PM Purpose: To Identify an unknown Hydrocarbon Procedure: Procedure listed in handout "Organic Chemistry Experiment -- Hydrocarbons" Hazards: Open flame and hydrocarbons are flammable. Equations: 1. . 3. . 4. . 5. . Unknown #: 1B s-6 Hyd-3 (colorless liquid) Data/Observations: Test Bromine addition Alkane Mixture of hexane and dichloromethane was originally clear liquid. After adding 3 drops red color Br2/CH2Cl
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Blood is a necessary component of the majority of living organisms (all vertebrates and some invertebrates); it carries vital nutrients‚ oxygen and proteins to body tissues and carries away waste products. Blood‚ although most commonly red‚ can also be found in such colours as green‚ blue‚ clear‚ pink and violet. However‚ the common misconception surrounding the idea that human blood is blue before oxygenation is false. All human blood is varying shades of red; these wild alternate colours are
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Department of Chemistry Extraction and Sublimation Experiment #4 10/02/13 Introduction Caffeine is a stimulant found in tea‚ coffee‚ cocoa‚ OTC medication‚ and cola drinks.It stimulates the brain and the central nervous system‚ so that a person feels less tired and more alert. The purpose of this lab is to determine the amount of caffeine in tea. The major component of tea is cellulose which is a polymer of glucose. Materials Lab coat Goggles Graduated cylinder 1 tea
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Baron Hasslinger Chemistry Like Dissolves Like — a Demonstration of Polarity Aim: To illustrate that polar solutes dissolve in polar solvents and that non-polar solutes dissolve in non-polar solvents by mixing polar and non-polar solutions in test tubes. Material: • Lab coats and safety spectacles • A fume cupboard • Heptane • Water • Potassium Permanganate • Iodine • 2 test tubes • 4 small flasks Method: (Wear safety specs and lab coats) • Prepare 4 small flasks containing: • A Heptane • B
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Aqueous Acid/Base Chemistry Resources: Harris ‘Quantitative Chemical Analysis’ Review: Pure water has a pH = 7 Autodissociation: H2O (( H3O+ + OH- K = [H3O+][OH-]/[H2O] -log[H3O+] = 7 [H3O+] = 10-7 M = [OH-] [H2O] = 55.56 M K = 1.8 x 10-16 ; pKa = 15.74 pKa is the acid dissociation constant; low pKa (strong acid‚ high pKa (weak acid we can also write Kw = [H3O+][OH-] Kw = 10-14 In water‚ pH + pOH = 14 pH scale Strong
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Alchemy in relation to Chemistry Practical applications of alchemy produced a wide range of contributions to medicine and the physical sciences. The alchemist Robert Boyle is credited as being the father of chemistry. Paracelsian iatrochemistry emphasized the medicinal application of alchemy ‚continued in plant alchemy‚ orspagyric. Studies of alchemy also influenced Isaac Newton’s theory of gravity.Alchemists made contributions to the "chemical" industries of the day—ore testing and refining‚ metalworking
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IB Chemistry Summary- By Paul Li & Silvia Riggioni TABLE OF CONTENTS Table of Contents............................................................................................................................................................ 1 Atomic Theory................................................................................................................................................................ 3 The Electromagnetic Spectrum.............................................
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My interest in Chemistry and Biology throughout my high school education has led me to apply for college courses in these areas. These are my strongest subjects and the ones in which I feel most capable. My interest in Biology‚ in particular‚ has stemmed from my vocation with domestic dogs. I have trained and helped with the treatment of injured dogs. From an early age and up to 2008‚ I’ve owned a German-Sheppard myself‚ which I trained from harming people and good behavioral manners. My experiences
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