TOPIC:- imperfection in solid’s NAME:-MILAN RAJAWAT Regd. No.:-11004886 Section:-M2R16 Roll No.:-B16 Subjet:-MEC208 INTRODUCTION For a crystalline solid we have tacitly assumed that perfect order exists throughout the material on an atomic scale. However‚ such an idealized solid does not exist; all contain large numbers of various defects or imperfections. As a matter of fact‚ many of the properties of materials are profoundly sensitive to deviations from crystalline
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Acetaminophen Abstract: The aim of this experiment is to prepare Acetaminophen (p-acetamidophenol)‚ an amide. Acetaminophen will be created by treating an amine (p-aminophenol) with an acetic anhydride. Color impurities present in the solid acetaminophen will be removed and then the decolorized product will be collected on a Büchner funnel for further purification by crystallization. Purity will then be determined by melting point. Introduction: Acetaminophen is commonly used as an analgesic to
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Look at these pictures. Label them as solid‚ liquid or gas. Use them to help you cross out the wrong information in the table below so you are left with only the correct information. solid liquid gas Extension: Using your table above‚ explain the following a) Why does a solid have a fixed shape? A solid has a fixed shape because the particles are very close together and arranged in strong regular lines although they vibrate the particles are so packed together
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THE PURITY AND PURIFICATION OF SOLIDS MELTING POINTS ABSTRACT Melting points of different mixtures of naphthalene and biphenyl were examined in this lab. Samples of these various mixtures were collected and tested by different individuals in the lab in order to find the eutectic point of biphenyl. Unknown substances were then tested using the mixture melting point method in order to determine their identities. INTRODUCTION The melting point of a solid is the temperature where the substance
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The Purity and Purification of Solids Recrystallization ABSTRACT In this experiment‚ impure adipic acid is purified though recrystallization. The impure adipic acid is dissolved in a solvent. After cooling it is ran through a vacuum filter to separate any moisture. The dry crystals are then weight for percent yield and the melting point range is taken to test the purity. There were two different trials ran in this experiment. The difference between the two was the addition of charcoal in
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nucleate most easily at grain boundaries and other defects. Growth of the precipitates normally occurs by long-range diffusion and redistribution of atoms. Diffusing atoms must be detached from their original locations (perhaps at lattice points in a solid solution)‚ move through the surrounding material to the nucleus‚ and be incorporated into the crystal structure of the precipitate. In some cases‚ the diffusing atoms might be so tightly bonded within an existing phase that the detachment process limits
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¥°. Summary of Results A. Melting point of Benzoic Acid Temperature (¡ÆC) Observation Unmelted White salt First liquid appear point 122 Grainy and shiny white Becoming all liquid 125 Clear B. Melting point of unknown #42 1st trial Temperature (¡ÆC) Observation Unmelted Shiny light yellow crystal First liquid appear point 99 Grainy yellow Becoming all liquid 101 Clear 2nd trial Temperature (¡ÆC) Observation Unmelted Shiny light yellow crystal First liquid appear point 95 Grainy
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Visualising solid shapes Solid shapes A solid shape is a 3-dimensional shape‚ one that has depth‚ width and breadth. Examples: pyramids‚ cubes and spheres .(such as a ball) One - Dimensional Shapes A figure that has only length is called One– Dimensional Figure. For example line‚ line segments‚ ray‚ etc. One-dimensional figure does not have any width or thickness. Two – Dimensional Shapes The shape of an object located in some space is a geometrical description of the part of that space occupied
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The Purity and Purification of Solids- Part 2- Recrystallization Courtney Percival CH 337 Laboratory‚ Section 037 Department of Chemistry Portland State University‚ Portland OR ABSTRACT INTRODUCTION Recrystallization is a commonly used tool in laboratories when dealing with impure solids. "An effective recrystallization is one in which 1) a high degree of purity is achieved as well as 2) a maximum recovery of sample".1 Solubility‚ the tendency of a substance to dissolve in a liquid‚ is an
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2 Solid-State Drives Solid-state drives have been making a huge presence and allowed for huge transformation in personal/mobile and high speed computing. But not only are they making a presence in mobile computing they are even finding them selves useful in camcorders. Now before solid-state drives came around choosing a storage device for your PC did not require much thought a person would just buy one with the most storage capacity they needed or could afford. However solid-state drives
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