Chemistry Essays | Free Essays on Chemistry

Polymer formulation

Published Date: 23 Mar 2015

20 Pages (7,900 Words)

CHAPTER 1 INTRODUCTION Pigments are additives in a polymer formulation which provide countless possibilities to designers who want to differentiate their product. Legislation and uprising environmental awareness has led to the gradual phasing out of heavy metal inorganic pigments and increased usage of organic pigments. Despite their good heat stability, light fastness, tinctorial strength and low cost, certain organic pigments are widely known to cause significant warpage ...

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The Chemistry Of Fireworks Chemistry Essay

Published Date: 23 Mar 2015

5 Pages (1,844 Words)

The chemistry behind fireworks is a series of oxidation and reduction reactions which result in the desired sound and light. This happens as propellants push the firework into the sky. Oxidation reactions ensure that the oxygen needed to exhaustively burn the mixture of reducing agents and excite the atoms in the light-emitting compounds is produced. Oxidizers used such as chlorates, nitrates and percolates and reducing agents such as ...

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Studying complex ions of copper (II)

Published Date: 23 Mar 2015

5 Pages (1,706 Words)

Aim In part A of the practical, the empirical formula of hydrated copper (II) sulphate was determined, is the waters of hydration of water of crystallisation. Making complex ions of copper (II) sulphate with Chloride and Ammonia ligands is done in part B. Introduction In this case, copper (II) exists as a hydrated molecule, also, x is often equal to 5 in the formula CuSO· 5HO. Firstly, ...

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FTIR spectroscopy of SO2

Published Date: 23 Mar 2015

10 Pages (3,684 Words)

Abstract In this lab, the IR spectrum of SO2 gas was taken. The spectrum was then used to determine which peaks corresponded to the vibrational modes of SO2. Once the modes had been determined, the experimental wavenumbers of the v1 and v3 modes and the overtones were used to determine the anharmonicity of the two different modes. While there was a difference between the two modes' anharmonicity, ...

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The word perfume

Published Date: 23 Mar 2015

4 Pages (1,491 Words)

Introduction: History of Perfume The word perfume itself is derived from the Latin per fume, which means “through smoke”. Due to the fact that the original use of aromatic materials was of burning incense, as an offering to the gods.1 Aromatic materials have been used for a variety of different purposes over the past thousand years. Perfumes during this era largely consisted of uncharacterized aromatic compounds.2 Ancient ...

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X-ray diffraction

Published Date: 23 Mar 2015

14 Pages (5,501 Words)

INTRODUCTION: X-ray diffraction The diffraction of X-rays as they pass through a substance, usually forming an interference pattern that can be captured on film and used to analyze the internal structure of the substance. The scattering of x-rays by crystal atoms, producing a diffraction pattern that yields information about the structure of the crystal. X-ray diffraction is used in x-ray crystallography . X-ray diffraction - the scattering ...

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Synthesis, Characterization and Thermal Studies of NDPAH

Published Date: 01 Jan 1970

6 Pages (2,320 Words)

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