amounts of alcohol will kill someone. According to Dr. Lester Grinspoon author of Marijuana: The Forbidden Medicine‚ “The only well confirmed negative effect of marijuana is caused by smoke‚ which contains three times more tars and five times more carbon monoxide than tobacco. But even the heaviest marijuana also relieves nausea suffered by cancer patients undergoing powerful chemotherapy. It is also used by patients who have multiple sclerosis and AIDS. Marijuana is also proved to be effective in the
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1 in vapour state sulphur partly exists as S2 molecule which has 2 unpaired electrons in the antibondind pi orbitals jus lyk oxygen and thus exhibits paramagnetism. 2 An interhalogen compound is a molecule whose atom contains two or more different halogen atoms (fluorine‚ chlorine‚ bromine‚ iodine or astatine). Most interhalogen compounds known are binary (composed of only two distinct elements). Their formulas are generally XYn‚ where n = 1‚ 3‚ 5 or 7‚ and X is the less electronegative
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List of the First 20 Elements and their Physical Properties Atomic Radii (pm) of the First 20 Elements: - Atomic radii decreases when moving down a period‚ as the number of protons increases‚ which thence increases the effective nuclear charge. - Atomic radii increases when moving down a group‚ as the number of shells increases‚ which thence increases shielding. - The downward-sloping pattern on the above graph shows the decrease in atomic radii down a period‚ and the sudden jumps
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Stoichiometric analysis can be used to determine the product yield for a given amount of reactant converted. Example of Stochiometric Analysis • Neutralization of hydrochloric acid with lime 2HCl + Ca(OH)2 CaCl2 + 2H2O • Oxidation of acetic acid to carbon dioxide and water. CH3COOH + 2O2 2CO2 + 2H2O Engr. Yvonne Ligaya F. Musico 5 Example of Stochiometric Analysis • Combustion of Methane CH4 + 2O2 CO2 + 2H2O • Oxidation of glucose C6H12O6 + 6O2 6CO2 + 6H2O Engr. Yvonne Ligaya F. Musico 6
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Life Processes Mrs.Nerg/Gren Living things have certain life processes in common. There are seven things that they need to do to count as being alive. The phrase MRS GREN is a way to remember them M Movement All living things move‚ even plants R Respiration Getting energy from food S Sensitivity Detecting changes in the surroundings G Growth All living things grow R Reproduction Making more living things of the same type E Excretion Getting rid of waste N Nutrition Taking in and using
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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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|Name: |Date: | Graded Assignment The Game with No Name A friend of yours would like to capture the adventures of Lewis and Clark in a video game‚ but she needs your help. She wants the game to be awarded Top 10 Kudos like Super Mario‚ Rock Band‚ and SimCity. Read all the directions first and follow them carefully to get this new expedition rolling.
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Organic chemistry studies carbon compounds‚ but a few carbon compounds such as carbon monoxide‚ carbon dioxide‚ metal carbonates‚ and carbon disulphide traditionally come under the umbrella of inorganic chemistry. INTRODUCTORY 1. Give the following for the compound propane C3H8: (a) Full structural formula (b) Skeletal formula 2. Draw all the possible isomers of hexane C6H14 and give the name of each. 3. Draw the structural formulae for each of the following alkanes: (a) 2‚2- dimethylbutane
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Organic molecules are the molecules of life that include Carbon and Hydrogen. Organic molecules consist of four important classes which are lipids‚ carbohydrates‚ proteins and nucleic acids. The most important organic molecule is Carbon. Carbon can form with up to 4 different atoms to form chains‚ rings and branches. Organic molecules also contain monomers. Monomers are the “building blocks” of macromolecules. Macromolecules are made up by chains of monomers‚ these are called polymers. Continuing
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Elements British v. American English 27 Unit 5 MATTER States of Matter Revision of Tenses Passive Voice 33 Unit 6 INORGANIC CHEMISTRY Types of Inorganic Chemical Reactions Inorganic Nomenclature Phrasal Verbs 40 3 Unit 7 ORGANIC CHEMISTRY 10 Carbon Facts Comparison of Adjectives Organic Nomenclature Word Order 47 Unit 8 ENVIRONMENTAL CHEMISTRY Environmental Chemistry Green Chemistry Twelve Principles of Green Chemistry Hazard Symbols Relative Pronouns 54 Unit 9 ANALYTICAL CHEMISTRY Titration
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