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Chemistry

2013-11-13 来源: 类别: 更多范文

Chemistry Chemistry review — Chapter 23 Descriptive Chemistry — is the aspect of chemistry that describes the sources, properties, and uses of specific elements and their compounds. Flux — in a blast furnace, is the substance that causes mineral impurities in an ore to melt more readily. Slag — is a light, easily melted, glasslike material formed in smelting process. Froth Flotation — is a method for concentrating upper ores. Roasting — is a process that involves heating a copper sulfide ore with oxygen-enriched air in a smelting furnace. The copper (I) oxide produced is processed to produce copper. Allotropes — are forms of the same element that have different molecular structures but that often exist in the same physical phase. Nitrogen Fixation — is the conversion or “lifting” of atmospheric nitrogen into compounds. ——————————————————————————————————————————————— Chapter 24 Isomer — are compounds with the same molecular formula but different structural formulas. Hydrocarbons — are organic compounds consisting solely of the elements hydrogen and carbon. Aliphatic — describes hydrocarbons that have an open-chain structure-either straight or branched. Combustion — is a chemical reaction producing noticeable light and heat. Substitution — is when one or more hydrogen atoms of hydrocarbon are replaced by some other element group. Cracking — is the process of breaking down large organic organic, energy, carbon, make, group, compounds, sugar, same, reactions, hydrocarbons, copper, amino, acids, substitution, soap, reaction, process, nitrogen, molecular, making, hydrogen, free, combustion, chapter, bonds, biochemical, atoms, water, solution, smelting, rate, proteins, produced, polymerization
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