Experiment No. 1: MELTING POINT AND BOILING POINTS OF ORGANIC COMPOUNDS ABSTRACT The properties of organic compounds depend on their chemical structures. Intermolecular forces of attraction affect physical properties such as melting and boiling point. Through the Thomas Hoover apparatus‚ the melting point of 8 test compounds was determined. Salicylic acid exhibited the highest melting point while naphthalene‚ the lowest. The stronger the intermolecular forces of attraction‚ the higher the melting
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Compounding in English and Vietnamese: A Contrastive Analysis Nguyen Ngoc Thao HCMC University of Education Introduction According to Wikipedia‚ a compound is a lexeme (less precisely‚ a word) that consists of more than one stem. Compounding is the word formation that creates compound lexemes (the other word-formation process being derivation). It refers to the faculty and device of language to form new words by combining or putting together old words. In other words
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layer was placed into a 400 ml beaker. The dichloromethane was placed back in the separatory funnel. 3. The dichloromethane was extracted with 2 more fresh portions of sodium bicarbonate solution. The bicarbonate solutions are combined in the beaker. 4. The dichloromethane was dried with about 10g of anhydrous sodium sulphate for 10 minutes after which the sodium bicarbonate was filtered using the Büchner funnel. The mass of an evaporating dish was measured and the dichloromethane placed in the evaporating
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During the Gilded Age‚ in the end which would be from 1875-1900 it was an era of prosperity and poverty. It is often remembered by the lifes of those like the Rockefellers and Carnagies‚ while the other majority of the people were working class. However‚ the movement towards organized labor was unsuccessful in improving the position of workers because of the failure of strikes‚ the superiority feeling employers had over employees and most importantly the lack of governmental support. Therefore the
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Assignments in Science Class X (Term II) 4 Carbon and its Compounds IMPORTANT NOTES 9. Unsaturated organic compounds : Organic compounds in which a double or a triple bond exists between two carbon atoms in a carbon chain‚ are called unsaturated organic compounds. 10. Hydrocarbons : Organic compounds which contain only carbon and hydrogen atoms are called hydrocarbons. 11. Straight chain hydrocarbons : Hydrocarbons‚ in which all the carbon atoms are linked to one another in a straight chain
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The Five Major Compounds That Make Up the Human Body The human body is one of the most complex and fascinating things on this planet. There are five major groups of compounds that compose the human body. These are carbohydrates‚ lipids‚ proteins‚ nucleotides‚ and water. These compounds are all very important to humans and without them humans would not be able to survive. Compounds have many functions that encourage a human cell and a human body to function. Compounds are pure substances
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IONIC COMPOUNDS In chemistry‚ an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. Usually‚ the positively charged portion consists of metal cations and the negatively charged portion is an anion or polyatomic ion. Ions in ionic compounds are held together by the electrostatic forcesbetween oppositely charged bodies. Ionic compounds have high melting and boiling points‚ and they are hard and very brittle. Ions can be single atoms‚ as the sodium and chlorine in
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TOPIC THE CATEGORIES OF ARISTOTLE COURSE INTRODUCTION TO METAPHYSICS 1 NAME MABKWE NICHOLAS CHUKWUNWEIKE REG. NO 09/UN/SI/A/0826 LECTURER REV. FR. DR. B. ABANUKA C.S.Sp. DATE JANUARY 2011 INTRODUCTION Aristotle (384-322BC) is one of the most influential philosophers of the western tradition and had many philosophical works credited to him. In his treatise on logic collectively known as “Organon”‚ Aristotle gave two preliminary treatises; “The Categories and De Interpretatione
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H C H H Compound A Compound A is an intermediate compound found in a production plant attempting to synthesise n-hexane. a) List three physical properties of alkynes. b) Give the IUPAC name of compound A. [3 marks] [2 marks] c) There are several ways to form the final product from Compound A. An operator has decided to use Pt catalyst to react with Compound A. Write the complete chemical reaction equation. [3 marks] d) The quality assurance manager of the production plant found out that the
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1. An organic compound X with a molecular formula C2H6O undergoes oxidation with in presence of alkaline KMnO4 to form a compound Y. X on heating in presence of Conc. H2SO4 at 443K gives Z. Which on reaction with H2Oin presence of H2SO4 gives back `X` `Z` reacts with Br2 (aq) and decolorizes it. Identify X‚ Y‚ & Z and write the reactions involved. 2. An organic compound ‘A’ is widely used as a preservative in pickles and has a molecular formula C2H2O2. This compound reacts with ethanol to
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