Traditional Culture Encyclopedia - Hotel accommodation - (09 Qingdao) Steel is an important metal material, which is widely used in production and life. The construction of the Bird's Nest, the main stadium of the Beijing Olympic Games, will be used.
(09 Qingdao) Steel is an important metal material, which is widely used in production and life. The construction of the Bird's Nest, the main stadium of the Beijing Olympic Games, will be used.
(4) 3co+Fe2O3.2fe+3co2 (5) saving metal resources.
Analysis: The condition of steel rusting is that steel is in contact with oxygen and water at the same time. The methods to prevent metal from rusting are: coating a layer of paint on the metal surface; Plating a layer of inert metal on the metal surface. According to the law of conservation of mass, chemical equations can be written.
(1) steel is a mixture of carbon and other substances in iron.
(2) Steel rust is the result of the simultaneous action of steel, water and oxygen. Water vapor.
(3) Isolation of oxygen or water can prevent steel from rusting.
(4) Iron oxide reacts with carbon monoxide to generate iron and carbon dioxide, so fill in: 3co+Fe2O3, 2fe+3co2.
(5) The recycling of scrap steel aims at saving metal resources.
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