<text><span class="style10">hat is Chemistry? (6 of 6)Mixtures</span><span class="style7">When elements or compounds are mixed together but not chemically bonded, they form a </span><span class="style26">chemical mixture</span><span class="style7">. A mixture can be of two solids (e.g. salt and sand), two liquids, two gases or permutations of these. A mixture can be separated into its pure chemical constituents by either chemical or physical means. For example, adding water to the sand-salt mixture dissolves the salt, leaving the sand in a pure state. The salt and water is itself a mixture described as a </span><span class="style26">solution</span><span class="style7">, from which the pure salt can be obtained by boiling off the water.The modern-day chemist has many other techniques for separating mixtures, such as distillation, chromatography, crystallization and electrolysis. The petrochemical industry is a prime example of how this technology can be used to convert natural gas and crude oil into a range of useful commercial and domestic products.DMPM</span></text>
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<text>Exaltone was the first synthetic chemical to be used in the manufacture of perfumes. Now a major industry based on the production and use of chemicals with a wide range of smells. These chemicals obviate the need to extract tiny amounts of chemicals from animals, such as musk from deer and civettone from civets.</text>
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<text>ΓÇó CHEMISTRYΓÇó OIL AND GASΓÇó IRON AND STEELΓÇó RUBBER AND PLASTICSΓÇó CHEMICALS AND BIO TECHNOLOGY</text>
