Title Freezing and Melting Point Objectives 1. To gain proficiency in constructing a graph and plotting data points. 2. To determine the freezing points of a compound from the graph of decreasing temperature versus time. 3. To determine the melting points of a known and unknown compound. Introduction Physical changes are the changes in the physical properties of a substance (Moore‚ Stanitski & Jurs‚ 2009). Freezing point is the fixed temperature at which a pure liquid converted into crystalline
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calories. Many companies are in the market with their products as complete health products; such as Complan‚ Bournvita‚ Horlics etc. but the parent is always wondered which is the best health drink to buy for their kids? COMPAN VS HORLICS Points of Differentiation: Product wise: Essential nutrients for kids: Look for these components when choosing any nutritional supplement for kid. * Calcium- Required for building strong bones and sustaining a normal
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Josh Copeland Professor Patton ENGL 1020M06 19 Feb. 2014 The Initiation Becoming an adult does not happen in a day. This process takes years of maturing and developing a brain that is capable of making smart life decisions. In the short stories “Stepdaughters” by Max Apple and “A&P” by John Updike‚ two young adults are put in difficult situations and forced to overcome them by making their own choices. In “Stepdaughters”‚ Stephanie‚ a high school student athlete struggles with her relationship
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Environmentally friendly cars will soon cease to be an option … they will become a necessity. FUJIO CHO The Scales Are Tipping Over Cars are an integral part of society‚ and life is almost unimaginable without them. Most parents drive to work in them‚ drop their children to school in them‚ and even get their groceries home in them! The object of countless boys and girls’ fantasies‚ cars have been pronounced “modern marvels” by the History Channel [1]‚ and the mass produced car one of the
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COLLIGATIVE PROPERTIES: FREEZING POINT DEPRESSION AND BOILING POINT ELEVATION DAY 1 – 04 FEBRUARY 2015 Colligative Properties Depends on the NUMBER of solute‚ not on the nature of solute particles Freezing Point Depression Boiling Point Elevation Vapor Pressure Lowering Osmotic Pressure Electrolyte and Nonelectrolytes Electrolytes •Separates in water forming a solution that conducts electric current •IONIC COMPOUNDS Non- electrolytes • does not allow the flow of an electric current • COVALENT
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Engineering and Chemistry Muralla St.‚ Intramuros‚ Manila Melting Point and Boiling Point of Organic Compounds Group No. 5 Manacup‚ Cris Vincent L. Oblena‚ Adrian D. Ong‚ Joshua Jyro B.* *Leader ABSTRACT In compounds‚ two of the physical properties affected by the varying structures are melting point and boiling point. Through the use of the Thomas-Hoover Melting Point Apparatus or the micro method‚ the melting and boiling point of organic compounds are now determined. The aim of this experiment
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temperature at which movement of the specimen is observed is recorded as the pour point. INTRODUCTION In the cloud point experiment‚ waxes will appear and thickens the oil and clogs fuel filter and injectors in engines. The wax also accumulates on the cold surfaces and forms an emulsion with water. The appearances of cloud point determine the first cloud of wax crystals in a liquid when it is cooled. Whereas‚ pour point experiment is to determine the minimum temperature of the oil which will continue
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The phrase “turning point” has a lot of meanings but personally‚ for me‚ it is a moment that caused me to realize what has always been in front of me. Turning point may also mean a time at which a decisive change in a situation occurs‚ especially one with beneficial results. Recently‚ one event became the turning point of my life and my beliefs. Last Tuesday‚ our class‚ II-St. Therese watched the film “The Encounter”. That movie marked a pivotal moment in my life. It helped me realize that Jesus
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molecule for each of the following. (3 points) 1. COOH -OH 2. COH -OH 3. COH -OH 1. List whether each of the following substances was positive or negative for reducing sugar‚ as indicated by the Benedict’s test. (6 points) 1. corn syrup (1 point) positive 2. table sugar (1 point) positive 3. unknown 1 (1 point) negative 4. unknown 2 (1 point) negative 5. unknown 3 (1 point) positive 6. unknown 4 (1 point) positive 1. List whether each of
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Melting Point Determination Identity and Purity of Solid Organic Compounds Objectives • To introduce the technique of melting point determination. • To use the concept of melting points for identification and characterization of organic compounds. • Properly fill and use a capillary melting point tube. • Determine accurate melting point ranges for a wide variety of organic substances. Introduction The melting point of a solid can easily and accurately be determined
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