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The long-awaited third installment in Theodore Gray's iconic "Elements" trilogy. The first two titles, Elements and Molecules, have sold more than 1.5 million copies worldwide. With Reactions bestselling author Theodore Gray continues the journey through our molecular and chemical world that begin with the tour de force The Elements and continued with Molecules. In The Elements Gray gave us a never-before-seen, mesmerizing photographic view of the 118 elements in the periodic table. In Molecules, with the same phenomenal photographic acumen, plus beautifully rendered computer generated graphics, he showed us how the elements combine to form the stuff that makes up our universe, from table salt to oxygen to the panoply of colors and smells that surround us.At last, we've reached Reactions, in which Gray once again puts his photographic and digital prowess and creativity monumental work demonstrating how molecules interact in ways that are essential to our very existence. The book begins with a brief recap of elements and molecules and then goes on to explain important concepts the characterize a chemical reaction, including Energy, Entropy, and Time. It is then organized by type of reaction including Combustion, Photosynthesis, Respiration, Oxidation, and Fermentation. A special section of chemical cycles including The Carbon Cycle, The Iron Cycle, and The Lime Cycle.