Isaac Asimov's A Short History of Chemistry PDF

By Isaac Asimov

ISBN-10: 0385036736

ISBN-13: 9780385036733

From using metals by means of prehistoric guy to the alchemical experiments of medieval and renaissance guy to the advanced chemical talents of up to date guy, Asimov lines the advance of this construction block of our technological global.

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Extra resources for A Short History of Chemistry

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Elements An element is a type of matter that cannot be broken down into two or more pure substances. There are 118 known elements, of which 91 occur naturally. Many elements are familiar to all of us. The charcoal used in outdoor grills is nearly pure carbon. Electrical wiring, jewelry, and water pipes are often made from copper, a metallic element. Another such element, aluminum, is used in many household utensils. Some elements come in and out of fashion, so to speak. Sixty years ago, ­elemental silicon was a chemical curiosity.

Matter can also be classified with respect to its composition: Most materials you encounter are mixtures. • pure substances, each of which has a fixed composition and a unique set of properties. • mixtures, composed of two or more substances. 1), whereas mixtures can be either homogeneous or heterogeneous. Elements An element is a type of matter that cannot be broken down into two or more pure substances. There are 118 known elements, of which 91 occur naturally. Many elements are familiar to all of us.

A) maple syrup (b) seawater passed through a sieve (c) melted rocky road ice cream 4. Classify the following as solution or heterogeneous mixture. (a) iron ore (b) chicken noodle soup (c) tears 5. How would you separate into its different components (a) a solution of acetone and water? (b) a mixture of aluminum powder and ethyl alcohol? 6. How would you separate into its different components (a) a mixture of the volatile gases propane, butane, and isopropane? (b) a solution of rubbing alcohol made up of isopropyl ­alcohol and water?

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A Short History of Chemistry by Isaac Asimov


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