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一、物质的组成、性质和分类[高考题回放]【例1】(2013·四川理综)下列物质分类正确的是()A.SO2、SiO2、CO均为酸性氧化物B.稀豆浆、硅酸、氯化铁溶液均为胶体C.烧碱、冰醋酸、四氯化碳均为电解质D.福尔马林、水玻璃、氨水均为混合物解析:酸性氧化物是指能与碱反应生成盐和水的氧化物,SO2、SiO2为酸性氧化物,而CO为不成盐氧化物,A项错;胶体是分散质粒子直径介于1~100nm之间的一种分散系,稀豆浆、
First, the material composition, nature and classification [Example 1] (Example 1) (2013 · Sichuan Science) The following material classification is correct () A.SO2, SiO2, CO are acidic oxide B. Shredded soy milk, Silicic acid, ferric chloride solution are colloidal C. Caustic soda, glacial acetic acid, carbon tetrachloride are electrolytes D. Formalin, water glass, ammonia are the mixture of analytic: acidic oxide refers to the reaction with the alkali Salt and water oxides, SO2, SiO2 acidic oxide, and CO is not salt oxide, A wrong; colloidal dispersion of particles with a diameter of between 1 ~ 100nm a dispersion, dilute soy milk,